Windows batch list files in directory recursively

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Windows batch list files in directory recursively

The creation of a folder is done with the assistance of the MD (Make directory) command. Syntax MKDIR [drive:]path MD [drive:]path Let's look at some examples on how to use the MD command. Examples md test The above command will create a directory called test in your current directory. md C:\test The above command will create a directory called test in the C drive. md "Test A" If there are spaces in the folder name, then the folder name should be given in quotes. mkdir \a\b\c The above command creates directories recursively and is the same as issuing the following set of commands. mkdir \a chdir \a mkdir b chdir b mkdir c batch_script_functions.htm Task Walk a given directory tree and print files matching a given pattern. Note: This task is for recursive methods. These tasks should read an entire directory tree, not a single directory. Note: Please be careful when running any code examples found here. Related task Walk a directory/Nonrecursively (read a single directory). 8th[edit] "*.c" f:rglob \ top of stack now has list of all "*.c" files, recursively Ada[edit] with Ada.Directories; use Ada.Directories;with Ada.Text_IO; procedure Test_Directory_Walk is procedure Walk (Name : String; Pattern : String) is procedure Print (Item : Directory_Entry_Type) is begin Ada.Text_IO.Put_Line (Full_Name (Item)); end Print; procedure Walk (Item : Directory_Entry_Type) is begin if Simple_Name (Item) /= "." and then Simple_Name (Item) /= ".." then Walk (Full_Name (Item), Pattern); end if; exception when Name_Error => null; end Walk; begin Search (Name, Pattern, (others => True), Print'Access); Search (Name, "", (Directory => True, others => False), Walk'Access); end Walk;begin Walk (".", "*.adb");end Test_Directory_Walk; The solution first enumerates files in a directory, that includes the subdirectories, if their names match the pattern. Then it steps down into each of the subdirectories. The pseudo directories . and .. are excluded. The behavior upon symbolic links depends on the OS and the implementation of the Ada.Directories package. ALGOL 68[edit] INT match=0, no match=1, out of memory error=2, other error=3; STRING slash = "/", pwd=".", parent=".."; PROC walk tree = (STRING path, PROC (STRING)VOID call back)VOID: ( []STRING files = get directory(path); FOR file index TO UPB files DO STRING file = files[file index]; STRING path file = path+slash+file; IF file is directory(path file) THEN IF file NE pwd AND file NE parent THEN walk tree(path file, call back) FI ELSE call back(path file) FI OD); STRING re sort a68 = "[Ss]ort[^/]*[.]a68$"; PROC match sort a68 and print = (STRING path file)VOID: IF grep in string(re sort a68, path file, NIL, NIL) = match THEN print((path file, new line)) FI; walk tree(".", match sort a68 and print) ./Shell_sort_c.a68 ./Quick_sort.a68 ./Shell_sort.a68 ./Cocktail_Sort.a68 ./Selection_Sort.a68 ./Merge_sort.a68 ./tmp/test_sort.a68 ./Bobosort.a68 ./Sorting_an_Array_of_Integers.a68 ./Insertion_Sort.a68 ./Permutation_Sort.a68 Arturo[edit] ; list all files at current pathprint list.recursive "." ; get all files at given path; and select only the ones we want ; just select the files with .md extensionselect list.recursive "some/path" => [".md" = extract.extension] ; just select the files that contain "test"select list.recursive "some/path" => [in? "test"] AutoHotkey[edit] Display all TMP files in Temp directory and its subdirectories. Loop, %A_Temp%\*.tmp,,1 out .= A_LoopFileName "`n"MsgBox,% out BaCon[edit] This line will recursively walk though all directories starting from the current directory ".": PRINT WALK$(".", 1, ".+", TRUE, NL$) Batch File[edit] A sample code that displays all the EXE files in System32 directory recursively. dir /s /b "%windir%\System32\*.exe" If you wanted to apply some command to each item in a directory tree, then use FOR with the switch /R. For example, to apply the ECHO command to every DLL file in C:\Windows\System32: FOR /R C:\Windows\System32 %%F IN (*.DLL) DO ECHO "%%F" This can be done from outside a batch file (entered directly at the command prompt) by changing the double percent signs (%%) to single percents (%): FOR /R C:\Windows\System32 %F IN (*.DLL) DO ECHO "%F" BBC BASIC[edit] directory$ = "C:\Windows\" pattern$ = "*.chm" PROClisttree(directory$, pattern$) END DEF PROClisttree(dir$, filter$) LOCAL dir%, sh%, res% DIM dir% LOCAL 317 IF RIGHT$(dir$) "\" IF RIGHT$(dir$) "/" dir$ += "\" SYS "FindFirstFile", dir$ + filter$, dir% TO sh% IF sh% -1 THEN REPEAT IF (!dir% AND 16) = 0 PRINT dir$ + $$(dir%+44) SYS "FindNextFile", sh%, dir% TO res% UNTIL res% = 0 SYS "FindClose", sh% ENDIF SYS "FindFirstFile", dir$ + "*", dir% TO sh% IF sh% -1 THEN REPEAT IF (!dir% AND 16) IF dir%?44 &2E THEN PROClisttree(dir$ + $$(dir%+44) + "\", filter$) ENDIF SYS "FindNextFile", sh%, dir% TO res% UNTIL res% = 0 SYS "FindClose", sh% ENDIF ENDPROC C[edit] [edit] #include #include #include #include #include #include #include #include #include enum { WALK_OK = 0, WALK_BADPATTERN, WALK_NAMETOOLONG, WALK_BADIO,}; #define WS_NONE 0#define WS_RECURSIVE (1 d_name, "..")) continue; strncpy(fn + len, dent->d_name, FILENAME_MAX - len); if (lstat(fn, &st) == -1) { warn("Can't stat %s", fn); res = WALK_BADIO; continue; } /* don't follow symlink unless told so */ if (S_ISLNK(st.st_mode) && !(spec & WS_FOLLOWLINK)) continue; /* will be false for symlinked dirs */ if (S_ISDIR(st.st_mode)) { /* recursively follow dirs */ if ((spec & WS_RECURSIVE)) walk_recur(fn, reg, spec); if (!(spec & WS_MATCHDIRS)) continue; } /* pattern match */ if (!regexec(reg, fn, 0, 0, 0)) puts(fn); } if (dir) closedir(dir); return res ? res : errno ? WALK_BADIO : WALK_OK;} int walk_dir(char *dname, char *pattern, int spec){ regex_t r; int res; if (regcomp(&r, pattern, REG_EXTENDED | REG_NOSUB)) return WALK_BADPATTERN; res = walk_recur(dname, &r, spec); regfree(&r); return res;} int main(){ int r = walk_dir(".", ".\\.c$", WS_DEFAULT|WS_MATCHDIRS); switch(r) { case WALK_OK: break; case WALK_BADIO: err(1, "IO error"); case WALK_BADPATTERN: err(1, "Bad pattern"); case WALK_NAMETOOLONG: err(1, "Filename too long"); default: err(1, "Unknown error?"); } return 0;} [edit] With the fts(3) functions from 4.4BSD, this program can sort the files, and can also detect cycles (when a link puts a directory inside itself). This program makes a logical traversal that follows symbolic links to directories. #include #include #include #include #include #include #include /* Compare files by name. */intentcmp(const FTSENT **a, const FTSENT **b){ return strcmp((*a)->fts_name, (*b)->fts_name);} /* * Print all files in the directory tree that match the glob pattern. * Example: pmatch("/usr/src", "*.c"); */voidpmatch(char *dir, const char *pattern){ FTS *tree; FTSENT *f; char *argv[] = { dir, NULL }; /* * FTS_LOGICAL follows symbolic links, including links to other * directories. It detects cycles, so we never have an infinite * loop. FTS_NOSTAT is because we never use f->statp. It uses * our entcmp() to sort files by name. */ tree = fts_open(argv, FTS_LOGICAL | FTS_NOSTAT, entcmp); if (tree == NULL) err(1, "fts_open"); /* * Iterate files in tree. This iteration always skips * "." and ".." because we never use FTS_SEEDOT. */ while ((f = fts_read(tree))) { switch (f->fts_info) { case FTS_DNR: /* Cannot read directory */ case FTS_ERR: /* Miscellaneous error */ case FTS_NS: /* stat() error */ /* Show error, then continue to next files. */ warn("%s", f->fts_path); continue; case FTS_DP: /* Ignore post-order visit to directory. */ continue; } /* * Check if name matches pattern. If so, then print * path. This check uses FNM_PERIOD, so "*.c" will not * match ".invisible.c". */ if (fnmatch(pattern, f->fts_name, FNM_PERIOD) == 0) puts(f->fts_path); /* * A cycle happens when a symbolic link (or perhaps a * hard link) puts a directory inside itself. Tell user * when this happens. */ if (f->fts_info == FTS_DC) warnx("%s: cycle in directory tree", f->fts_path); } /* fts_read() sets errno = 0 unless it has error. */ if (errno != 0) err(1, "fts_read"); if (fts_close(tree) < 0) err(1, "fts_close");} intmain(){ pmatch(".", "*.c"); return 0;} Windows[edit] #include #include #include #include /* Print "message: last Win32 error" to stderr. */voidoops(const wchar_t *message){ wchar_t *buf; DWORD error; buf = NULL; error = GetLastError(); FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error, 0, (wchar_t *)&buf, 0, NULL); if (buf) { fwprintf(stderr, L"%ls: %ls", message, buf); LocalFree(buf); } else { /* FormatMessageW failed. */ fwprintf(stderr, L"%ls: unknown error 0x%x", message, error); }} /* * Print all files in a given directory tree that match a given wildcard * pattern. */intmain(){ struct stack { wchar_t *path; size_t pathlen; size_t slashlen; HANDLE ffh; WIN32_FIND_DATAW ffd; struct stack *next; } *dir, dir0, *ndir; size_t patternlen; int argc; wchar_t **argv, *buf, c, *pattern; /* MinGW never provides wmain(argc, argv). */ argv = CommandLineToArgvW(GetCommandLineW(), &argc); if (argv == NULL) { oops(L"CommandLineToArgvW"); exit(1); } if (argc != 3) { fwprintf(stderr, L"usage: %ls dir pattern", argv[0]); exit(1); } dir0.path = argv[1]; dir0.pathlen = wcslen(dir0.path); pattern = argv[2]; patternlen = wcslen(pattern); if (patternlen == 0 || wcscmp(pattern, L".") == 0 || wcscmp(pattern, L"..") == 0 || wcschr(pattern, L'/') || wcschr(pattern, L'\\')) { fwprintf(stderr, L"%ls: invalid pattern", pattern); exit(1); } /* * Must put backslash between path and pattern, unless * last character of path is slash or colon. * * 'dir' => 'dir\*' * 'dir\' => 'dir\*' * 'dir/' => 'dir/*' * 'c:' => 'c:*' * * 'c:*' and 'c:\*' are different files! */ c = dir0.path[dir0.pathlen - 1]; if (c == ':' || c == '/' || c == '\\') dir0.slashlen = dir0.pathlen; else dir0.slashlen = dir0.pathlen + 1; /* Allocate space for path + backslash + pattern + \0. */ buf = calloc(dir0.slashlen + patternlen + 1, sizeof buf[0]); if (buf == NULL) { perror("calloc"); exit(1); } dir0.path = wmemcpy(buf, dir0.path, dir0.pathlen + 1); dir0.ffh = INVALID_HANDLE_VALUE; dir0.next = NULL; dir = &dir0; /* Loop for each directory in linked list. */loop: while (dir) { /* * At first visit to directory: * Print the matching files. Then, begin to find * subdirectories. * * At later visit: * dir->ffh is the handle to find subdirectories. * Continue to find them. */ if (dir->ffh == INVALID_HANDLE_VALUE) { /* Append backslash + pattern + \0 to path. */ dir->path[dir->pathlen] = '\\'; wmemcpy(dir->path + dir->slashlen, pattern, patternlen + 1); /* Find all files to match pattern. */ dir->ffh = FindFirstFileW(dir->path, &dir->ffd); if (dir->ffh == INVALID_HANDLE_VALUE) { /* Check if no files match pattern. */ if (GetLastError() == ERROR_FILE_NOT_FOUND) goto subdirs; /* Bail out from other errors. */ dir->path[dir->pathlen] = '\0'; oops(dir->path); goto popdir; } /* Remove pattern from path; keep backslash. */ dir->path[dir->slashlen] = '\0'; /* Print all files to match pattern. */ do { wprintf(L"%ls%ls", dir->path, dir>ffd.cFileName); } while (FindNextFileW(dir->ffh, &dir->ffd) != 0); if (GetLastError() != ERROR_NO_MORE_FILES) { dir->path[dir->pathlen] = '\0'; oops(dir->path); } FindClose(dir->ffh); subdirs: /* Append * + \0 to path. */ dir->path[dir->slashlen] = '*'; dir->path[dir->slashlen + 1] = '\0'; /* Find first possible subdirectory. */ dir>ffh = FindFirstFileExW(dir->path, FindExInfoStandard, &dir->ffd, FindExSearchLimitToDirectories, NULL, 0); if (dir->ffh == INVALID_HANDLE_VALUE) { dir->path[dir->pathlen] = '\0'; oops(dir->path); goto popdir; } } else { /* Find next possible subdirectory. */ if (FindNextFileW(dir->ffh, &dir->ffd) == 0) goto closeffh; } /* Enter subdirectories. */ do { const wchar_t *fn = dir->ffd.cFileName; const DWORD attr = dir->ffd.dwFileAttributes; size_t buflen, fnlen; /* * Skip '.' and '..', because they are links to * the current and parent directories, so they * are not subdirectories. * * Skip any file that is not a directory. * * Skip all reparse points, because they might * be symbolic links. They might form a cycle, * with a directory inside itself. */ if (wcscmp(fn, L".") == 0 || wcscmp(fn, L"..") == 0 || (attr & FILE_ATTRIBUTE_DIRECTORY) == 0 || (attr & FILE_ATTRIBUTE_REPARSE_POINT)) continue; ndir = malloc(sizeof *ndir); if (ndir == NULL) { perror("malloc"); exit(1); } /* * Allocate space for path + backslash + * fn + backslash + pattern + \0. */ fnlen = wcslen(fn); buflen = dir->slashlen + fnlen + patternlen + 2; buf = calloc(buflen, sizeof buf[0]); if (buf == NULL) { perror("malloc"); exit(1); } /* Copy path + backslash + fn + \0. */ wmemcpy(buf, dir->path, dir->slashlen); wmemcpy(buf + dir>slashlen, fn, fnlen + 1); /* Push dir to list. Enter dir. */ ndir->path = buf; ndir->pathlen = dir->slashlen + fnlen; ndir->slashlen = ndir->pathlen + 1; ndir->ffh = INVALID_HANDLE_VALUE; ndir->next = dir; dir = ndir; goto loop; /* Continue outer loop. */ } while (FindNextFileW(dir->ffh, &dir->ffd) != 0);closeffh: if (GetLastError() != ERROR_NO_MORE_FILES) { dir->path[dir->pathlen] = '\0'; oops(dir->path); } FindClose(dir->ffh); popdir: /* Pop dir from list, free dir, but never free dir0. */ free(dir->path); if (ndir = dir->next) free(dir); dir = ndir; } return 0;} C#[edit] using System;using System.Collections.Generic;using System.IO;using System.Linq; namespace RosettaRecursiveDirectory{ class Program { static IEnumerable TraverseDirectory(string rootPath, Func Pattern) { var directoryStack = new Stack(); directoryStack.Push(new DirectoryInfo(rootPath)); while (directoryStack.Count > 0) { var dir = directoryStack.Pop(); try { foreach (var i in dir.GetDirectories()) directoryStack.Push(i); } catch (UnauthorizedAccessException) { continue; // We don't have access to this directory, so skip it } foreach (var f in dir.GetFiles().Where(Pattern)) // "Pattern" is a function yield return f; } } static void Main(string[] args) { // Print the full path of all .wmv files that are somewhere in the C:\Windows directory or its subdirectories foreach (var file in TraverseDirectory(@"C:\Windows", f => f.Extension == ".wmv")) Console.WriteLine(file.FullName); Console.WriteLine("Done."); } }} C++[edit] #include "boost/filesystem.hpp"#include "boost/regex.hpp"#include using namespace boost::filesystem; int main(){ path current_dir("."); // boost::regex pattern("a.*"); // list all files starting with a for (recursive_directory_iterator iter(current_dir), end; iter != end; ++iter) { std::string name = iter->path().filename().string(); if (regex_match(name, pattern)) std::cout path() My Documents,Inputbox: filename>m*.txt,Button:Search Haskell[edit] Using the packages directory and filemanip import System.Environmentimport System.Directoryimport System.FilePath.Find search pat = find always (fileName ~~? pat) main = do [pat] IO ()dirWalk filefunc top = do isDirectory path.toString().endsWith(".mp3")) .forEach( System.out::println ); }} JavaScript[edit] var fso = new ActiveXObject("Scripting.FileSystemObject"); function walkDirectoryTree(folder, folder_name, re_pattern) { WScript.Echo("Files in " + folder_name + " matching '" + re_pattern + "':"); walkDirectoryFilter(folder.files, re_pattern); var subfolders = folder.SubFolders; WScript.Echo("Folders in " + folder_name + " matching '" + re_pattern + "':"); walkDirectoryFilter(subfolders, re_pattern); WScript.Echo(); var en = new Enumerator(subfolders); while (! en.atEnd()) { var subfolder = en.item(); walkDirectoryTree(subfolder, folder_name + "/" + subfolder.name, re_pattern); en.moveNext(); }} function walkDirectoryFilter(items, re_pattern) { var e = new Enumerator(items); while (! e.atEnd()) { var item = e.item(); if (item.name.match(re_pattern)) WScript.Echo(item.name); e.moveNext(); }} walkDirectoryTree(dir, dir.name, '\\.txt$'); Julia[edit] rootpath = "/home/user/music"pattern = r".mp3$" for (root, dirs, files) in walkdir(rootpath) for file in files if occursin(pattern, file) println(file) end endend Kotlin[edit] // version 1.2.0 import java.io.File fun walkDirectoryRecursively(dirPath: String, pattern: Regex): Sequence { val d = File(dirPath) require (d.exists() && d.isDirectory()) return d.walk().map { it.name }.filter { it.matches(pattern) }.sorted().distinct() } fun main(args: Array) { val r = Regex("""^v(a|f).*\.h$""") // get all C header files beginning with 'va' or 'vf' val files = walkDirectoryRecursively("/usr/include", r) for (file in files) println(file)} Output (Ubuntu 14.04): valarray_after.h valarray_array.h valarray_before.h values.h vfio.h vfs.h Lasso[edit] // care only about visible files and filter out any directoriesdefine dir -> eachVisibleFilePath() => { return with name in self -> eachEntry where #name -> second != io_dir_dt_dir where not(#name -> first -> beginswith('.')) select .makeFullPath(#name -> first)} // care only about visible directories and filter out any filesdefine dir -> eachVisibleDir() => { return with name in self -> eachEntry where #name -> second == io_dir_dt_dir where not(#name -> first -> beginswith('.')) select dir(.makeFullPath(#name -> first + '/'))} // Recursively walk the directory tree and find all files and directories// return only paths to filesdefine dir -> eachVisibleFilePathRecursive(-dirFilter = void) => { local(files = .eachVisibleFilePath) with dir in .eachVisibleDir where !#dirFilter || #dirFilter(#dir -> realPath) do { #files = tie(#files, #dir -> eachVisibleFilePathRecursive(-dirFilter = #dirFilter)) } return #files} local(matchingfilenames = array) with filepath in dir('/') -> eachVisibleFilePathRecursivewhere #filepath -> endswith('.lasso')let filename = #filepath -> split('/') -> lastdo #matchingfilenames -> insert(#filename) #matchingfilenames -> array(myfile.lasso, test.lasso, rosetta.lasso) LiveCode[edit] function recurDir dir, ext set the defaultFolder to dir repeat for each line fi in the files if fileExt(fi) = ext then put the longfilepath of fi & cr after fileList end if end repeat repeat for each line di in the folders if di is not "." and di is not ".." then put recurDir((dir & slash & di), ext) & cr after fileList end if end repeat filter fileList without empty return fileListend recurDir function fileExt f set the itemdel to "." return the last item of fend fileExt Example put recurDir(the home folder & slash & "music", "mp3") Output ... /Users/xxx/music/albumx/trackx.mp3 /Users/xxx/music/albumx/trackx2.mp3 /Users/xxx/music/albumy/tracky.mp3 ... Lua[edit] Lua itself is extremely spartanic as it is meant for embedding. As lfs (LuaFileSystem) is about as standard an extension as it gets, we use that. local lfs = require("lfs") -This function takes two arguments:-- - the directory to walk recursively;-- - an optional function that takes a file name as argument, and returns a boolean.function find(self, fn) return coroutine.wrap(function() for f in lfs.dir(self) do if f ~= "." and f ~= ".." then local _f = self .. "/" .. f if not fn or fn(_f) then coroutine.yield(_f) end if lfs.attributes(_f, "mode") == "directory" then for n in find(_f, fn) do coroutine.yield(n) end end end end end)end -- Examples-- List all files and directoriesfor f in find("directory") do print(f)end -- List lua filesfor f in find("directory", function(self) return self:match("%.lua$") end) do print(f)end -- List directoriesfor f in find("directory", function(self) return "directory" == lfs.attributes(self, "mode") end) do print(f)end Lua provides functions such as os.execute([command]) and io.popen(prog [, mode]). Below an example for Windows users having io.popen at their disposal. Mind you, it may pop-up a command window. -- Gets the output of given program as string-- Note that io.popen is not available on all platformslocal function getOutput(prog) local file = assert(io.popen(prog, "r")) local output = assert(file:read("*a")) file:close() return outputend -- Iterates files in given directorylocal function files(directory, recursively) -- Use windows" dir command local directory = directory:gsub("/", "\\") local filenames = getOutput(string.format("dir %s %s/B/A:A", directory, recursively and '/S' or '')) -- Function to be called in "for filename in files(directory)" return coroutine.wrap(function() for filename in filenames:gmatch("([^\r]+)") do coroutine.yield(filename) end end)end -- Walk "C:/Windows" looking for executableslocal directory = "C:/Windows"local pattern = ".*%.exe$" -- for finding executablesfor filename in files(directory, true) do if filename:match(pattern) then print(filename) endend Mathematica[edit] The built-in function FileNames does exactly this: FileNames[] lists all files in the current working directory. FileNames[form] lists all files in the current working directory whose names match the string pattern form. FileNames[{form1,form2,...}] lists all files whose names match any of the form_i. FileNames[forms,{dir1,dir2,...}] lists files with names matching forms in any of the directories dir_i. FileNames[forms,dirs,n] includes files that are in subdirectories up to n levels down. Examples (find all files in current directory, find all png files in root directory, find all files on the hard drive): FileNames["*"]FileNames["*.png", $RootDirectory]FileNames["*", {"*"}, Infinity] the result can be printed with Print /@ FileNames[....] MATLAB / Octave[edit] function walk_a_directory_recursively(d, pattern) f = dir(fullfile(d,pattern)); for k = 1:length(f) fprintf('%s',fullfile(d,f(k).name)); end; f = dir(d); n = find([f.isdir]); for k=n(:)' if any(f(k).name~='.') walk_a_directory_recursively(fullfile(d,f(k).name), pattern); end; end;end; MAXScript[edit] fn walkDir dir pattern =( dirArr = GetDirectories (dir + "\\*") for d in dirArr do ( join dirArr (getDirectories (d + "\\*")) ) append dirArr (dir + "\\") -- Need to include the original top level directory for f in dirArr do ( print (getFiles (f + pattern)) )) walkDir "C:" "*.txt" MoonScript[edit] MoonScript compiles to Lua, which itself is extremely spartanic as it is meant for embedding. As lfs (LuaFileSystem) is about as standard an extension as it gets, we use that. lfs = require "lfs" -- This function takes two arguments:-- - the directory to walk recursively;-- - an optional function that takes a file name as argument, and returns a boolean.find = (fn) => coroutine.wrap -> for f in lfs.dir @ if f ~= "." and f ~= ".." _f = @.."/"..f coroutine.yield _f if not fn or fn _f if lfs.attributes(_f, "mode") == "directory" coroutine.yield n for n in find _f, fn -- Examples-- List all filesprint f for f in find "templates" -- List moonscript filesprint f for f in find "templates", => @\match "%.moon$" -- List directoriesprint f for f in find "templates", => "directory" == lfs.attributes @, "mode" Nanoquery[edit] import Nanoquery.IO def get_files(dirname) local_filenames = new(File).listDir(dirname) filenames = {} for i in range(0, len(local_filenames) - 1) if len(local_filenames) > 0 if not new(File, local_filenames[i]).isDir() filenames.append(local_filenames[i]) else filenames += get_files(local_filenames[i]) end end end return filenamesend f = new(File)for file in get_files("/") if lower(f.getExtension(file)) = ".mp3" println file endend Nim[edit] The "os" standard module provides an iterator to walk recursively a directory. The iterator allows some filtering about the kind of entry to consider: real files (default), symbolic links to files, directories, symbolic links to directories. It doesn't allow to specify a pattern, so filtering on name should be done using another mechanism (for instance, regular expressions). import os, re for file in walkDirRec "/": if file.match re".*\.mp3": echo file Objeck[edit] use System.IO.File; class Test { function : Main(args : String[]) ~ Nil { if(args->Size() = 2) { DescendDir(args[0], args[1]); }; } function : DescendDir(path : String, pattern : String) ~ Nil { files := Directory->List(path); each(i : files) { file := files[i]; if(file->StartsWith('.')) { dir_path := String->New(path); dir_path += '/'; dir_path += file; if(Directory->Exists(dir_path)) { DescendDir(dir_path, pattern); } else if(File->Exists(dir_path) & dir_path->EndsWith(pattern)) { dir_path->PrintLine(); }; }; }; }} Objective-C[edit] NSString *dir = NSHomeDirectory();NSDirectoryEnumerator *de = [[NSFileManager defaultManager] enumeratorAtPath:dir]; for (NSString *file in de) if ([[file pathExtension] isEqualToString:@"mp3"]) NSLog(@"%@", file); OCaml[edit] #!/usr/bin/env ocaml#load "unix.cma"#load "str.cma"open Unix let walk_directory_tree dir pattern = let re = Str.regexp pattern in (* pre-compile the regexp *) let select str = Str.string_match re str 0 in let rec walk acc = function | [] -> (acc) | dir::tail -> let contents = Array.to_list (Sys.readdir dir) in let contents = List.rev_map (Filename.concat dir) contents in let dirs, files = List.fold_left (fun (dirs,files) f -> match (stat f).st_kind with | S_REG -> (dirs, f::files) (* Regular file *) | S_DIR -> (f::dirs, files) (* Directory *) | _ -> (dirs, files) ) ([],[]) contents in let matched = List.filter (select) files in walk (matched @ acc) (dirs @ tail) in walk [] [dir];; let () = let results = walk_directory_tree "/usr/local/lib/ocaml" ".*\\.cma" in List.iter print_endline results;;; ooRexx[edit] version 1[edit] /* REXX ---------------------------------------------------------------* List all file names on my disk D: that contain the string TTTT*--------------------------------------------------------------------*/call SysFileTree "d:\*.*", "file", "FS" -- F get all Files -- S search subdirectoriesSay file.0 'files on disk'do i=1 to file.0 If pos('TTTT',translate(file.i))>0 Then say file.i end 1127869 files on disk 1/21/15 10:31p 340 A---- d:\tttt.txt 1/21/15 10:37p 8 A---- d:\test\test2\test3\attttb.txt 1/21/15 10:32p 340 A---- d:\_l\TtTttt.txt version 2[edit] Get only files matching the file-spec. /* REXX ---------------------------------------------------------------* List all file names on my disk D: that contain the string TTTT*--------------------------------------------------------------------*/call SysFileTree "*TTTT*.*", "file", "FS" -- F get all Files -- S search subdirectoriesSay file.0 'files found'do i=1 to file.0 If pos('TTTT',translate(file.i))>0 Then say file.i end 3 files found 1/21/15 10:31p 340 A---- D:\tttt.txt 1/21/15 10:37p 8 A---- D:\test\test2\test3\attttb.txt 1/21/15 10:32p 340 A---- D:\_l\TtTttt.txt Oz[edit] declare [Path] = {Module.link ['x-oz://system/os/Path.ozf']} [Regex] = {Module.link ['x-oz://contrib/regex']} proc {WalkDirTree Root Pattern Proc} proc {Walk R} Entries = {Path.readdir R} Files = {Filter Entries Path.isFile} MatchingFiles = {Filter Files fun {$ File} {Regex.search Pattern File} \= false end} Subdirs = {Filter Entries Path.isDir} in {ForAll MatchingFiles Proc} {ForAll Subdirs Walk} end in {Walk Root} endin {WalkDirTree "." ".*\\.oz$" System.showInfo} Perl[edit] Use the File::Find module from CPAN: use File::Find qw(find);my $dir = '.';my $pattern = 'foo';my $callback = sub { print $File::Find::name, "" if /$pattern/ };find $callback, $dir; Or if you need maximum performance and are on a 'nix system, open a pipe to the GNU find program: sub shellquote { "'".(shift =~ s/'/'\\''/gr). "'" } sub find_files { my $dir = shellquote(shift); my $test = shellquote(shift); local $/ = "\0"; open my $pipe, "find $dir -iname $test -print0 |" or die "find: $!."; while () { print "$_"; } # Here you could do something else with each file path, other than simply printing it. close $pipe;} find_files('.', '*.mp3'); Phix[edit] There is a builtin routine for this, walk_dir() - if interested you can find the full implementation in builtins\file.e (an autoinclude). function find_pfile(string pathname, sequence dirent) if match("pfile.e",dirent[D_NAME]) then -- return pathname&dirent[D_NAME] -- as below ?pathname&"\\"&dirent[D_NAME] end if return 0 -- non-zero terminates scan end function ?walk_dir("C:\\Program Files (x86)\\Phix",find_pfile,1) Passing 1 as the third parameter makes it scan recursively. "C:\\Program Files (x86)\\Phix\\.hg\\store\\data\\builtins\\pfile.e.i" "C:\\Program Files (x86)\\Phix\\builtins\\pfile.e" 0 [the final 0 is from the walk_dir() call, whereas both paths are printed from inside find_pfile()] PHP[edit] function findFiles($dir = '.', $pattern = '/./'){ $prefix = $dir . '/'; $dir = dir($dir); while (false !== ($file = $dir->read())){ if ($file === '.' || $file === '..') continue; $file = $prefix . $file; if (is_dir($file)) findFiles($file, $pattern); if (preg_match($pattern, $file)){ echo $file . ""; } }}findFiles('./foo', '/\.bar$/'); This implementation uses Perl compatible regular expressions to match the whole path of the file PHP BFS (Breadth First Search)[edit] /* This script performs a BFS search with recursion protection it is often faster to search using this method across a filesystem due to a few reasons: * filesystem is accessed in native node order * a recursive function is not required allowing infinate depth * multiple directory handles are not required * the file being searched for is often not that deep in the fs This method also leverages PHP array hashing to speed up loop detection while minimizing the amount of RAM used to track the search history. -Geoffrey McRae Released as open license for any use.*/if ($_SERVER['argc'] < 3) { printf( "" . "Usage: %s (path) (search) [stop]" . " path the path to search" . " search the filename to search for" . " stop stop when file found, default 1" . "" , $_SERVER['argv'][0]); exit(1);} $path = $_SERVER['argv'][1];$search = $_SERVER['argv'][2];if ($_SERVER['argc'] > 3) $stop = $_SERVER['argv'][3] == 1;else $stop = true; /* get the absolute path and ensure it has a trailing slash */$path = realpath($path);if (substr($path, -1) !== DIRECTORY_SEPARATOR) $path .= DIRECTORY_SEPARATOR; $queue = array($path => 1);$done = array();$index = 0;while(!empty($queue)) { /* get one element from the queue */ foreach($queue as $path => $unused) { unset($queue[$path]); $done[$path] = null; break; } unset($unused); $dh = @opendir($path); if (!$dh) continue; while(($filename = readdir($dh)) !== false) { /* dont recurse back up levels */ if ($filename == '.' || $filename == '..') continue; /* check if the filename matches the search term */ if ($filename == $search) { echo "$path$filename"; if ($stop) break 2; } /* get the full path */ $filename = $path . $filename; /* resolve symlinks to their real path */ if (is_link($filename)) $filename = realpath($filename); /* queue directories for later search */ if (is_dir($filename)) { /* ensure the path has a trailing slash */ if (substr($filename, -1) !== DIRECTORY_SEPARATOR) $filename .= DIRECTORY_SEPARATOR; /* check if we have already queued this path, or have done it */ if (array_key_exists($filename, $queue) || array_key_exists($filename, $done)) continue; /* queue the file */ $queue[$filename] = null; } } closedir($dh);} PicoLisp[edit] (let Dir "." (recur (Dir) (for F (dir Dir) (let Path (pack Dir "/" F) (cond ((=T (car (info Path))) # Is a subdirectory? (recurse Path) ) # Yes: Recurse ((match '`(chop "[email protected]") (chop F)) # Matches 's*.l'? (println Path) ) ) ) ) ) ) # Yes: Print it "./src64/sym.l" "./src64/subr.l" ... Pop11[edit] Built-in procedure sys_file_match searches directories or directory trees using shell-like patterns (three dots indicate search for subdirectory tree). lvars repp, fil;;;; create path repeatersys_file_match('.../*.p', '', false, 0) -> repp;;;; iterate over pathswhile (repp() ->> fil) /= termin do ;;; print the path printf(fil, '%s');endwhile; PowerShell[edit] In PowerShell the Get-ChildItem cmdlet allows for recursive filtering on file names with simple wildcards: Get-ChildItem -Recurse -Include *.mp3 For more complex filtering criteria the result of Get-ChildItem can be piped into the Where-Object cmdlet: Get-ChildItem -Recurse | Where-Object { $_.Name -match 'foo[0-9]' -and $_.Length -gt 5MB } To perform an action on every matching file the results can be piped into the ForEach-Object cmdlet: Get-ChildItem -Recurse | Where-Object { $_.Name -match 'foo[0-9]' } | ForEach-Object { ... } Note: To include only files instead of directories too each of the above needs an additionalWhere-Object filter: | Where-Object { !$_.PSIsContainer } Prolog[edit] % submitted by Aykayayciti (Earl Lamont Montgomery)% altered from fsaenzperez April 2019 % (swi-prolog.discourse-group)test_run :- proc_dir('C:\\vvvv\\vvvv_beta_39_x64'). proc_dir(Directory) :- format('Directory: ~w~n',[Directory]), directory_files(Directory,Files),!, %cut inserted proc_files(Directory,Files). proc_files(Directory, [File|Files]) :- proc_file(Directory, File),!, %cut inserted proc_files(Directory, Files).proc_files(_Directory, []). proc_file(Directory, File) :- ( File = '.', directory_file_path(Directory, File, Path), exists_directory(Path),!,%cut inserted format('Directory: ~w~n',[File]) ; File = '..', directory_file_path(Directory, File, Path), exists_directory(Path),!,%cut inserted format('Directory: ~w~n',[File]) ; directory_file_path(Directory, File, Path), exists_directory(Path),!,%cut inserted proc_dir(Path) ; directory_file_path(Directory, File, Path), exists_file(Path),!,%cut inserted format('File: ~w~n',[File]) ; format('Unknown: ~w~n',[File]) ). output : ?test_run.File: GMFBridge.axFile: libeay32.dllFile: ssleay32.dllFile: license.txtDirectory: C:\vvvv\vvvv_beta_39_x64/licensesDirectory: .Directory: ..File: Apache.txtFile: BSD.txtFile: LGPL.txtFile: MIT.txtFile: MPL.txtFile: MS-PL-Eula.rtfFile: MS-PL.txtFile: MSR-SSLA.txt PureBasic[edit] Procedure.s WalkRecursive(dir,path.s,Pattern.s="\.txt$") Static RegularExpression If Not RegularExpression RegularExpression=CreateRegularExpression(#PB_Any,Pattern) EndIf While NextDirectoryEntry(dir) If DirectoryEntryType(dir)=#PB_DirectoryEntry_Directory If DirectoryEntryName(dir)"." And DirectoryEntryName(dir)".." If ExamineDirectory(dir+1,path+DirectoryEntryName(dir),"") WalkRecursive(dir+1,path+DirectoryEntryName(dir)+"\",Pattern) FinishDirectory(dir+1) Else Debug "Error in "+path+DirectoryEntryName(dir) EndIf EndIf Else ; e.g. #PB_DirectoryEntry_File If MatchRegularExpression(RegularExpression,DirectoryEntryName(dir)) Debug DirectoryEntryName(dir) EndIf EndIf WendEndProcedure ;- Implementation; Find all .log-files in the C:\Windows treeExamineDirectory(1,"C:\WINDOWS\","")WalkRecursive(1,"C:\WINDOWS\","\.log$")FinishDirectory(1) Prolog[edit] % submitted by Aykayayciti (Earl Lamont Montgomery) % altered from fsaenzperez April 2019 % (swi-prolog.discourse-group) test_run :- proc_dir('C:\\vvvv\\vvvv_beta_39_x64'). proc_dir(Directory) :- format('Directory: ~w~n',[Directory]), directory_files(Directory,Files),!, %cut inserted proc_files(Directory,Files). proc_files(Directory, [File|Files]) :- proc_file(Directory, File),!, %cut inserted proc_files(Directory, Files). proc_files(_Directory, []). proc_file(Directory, File) :- ( File = '.', directory_file_path(Directory, File, Path), exists_directory(Path),!,%cut inserted format('Directory: ~w~n',[File]) ; File = '..', directory_file_path(Directory, File, Path), exists_directory(Path),!,%cut inserted format('Directory: ~w~n',[File]) ; directory_file_path(Directory, File, Path), exists_directory(Path),!,%cut inserted proc_dir(Path) ; directory_file_path(Directory, File, Path), exists_file(Path),!,%cut inserted format('File: ~w~n',[File]) ; format('Unknown: ~w~n',[File]) ). output : ?- test_run.File: GMFBridge.axFile: libeay32.dllFile: ssleay32.dllFile: license.txtDirectory: C:\vvvv\vvvv_beta_39_x64/licensesDirectory: .Directory: ..File: Apache.txtFile: BSD.txtFile: LGPL.txtFile: MIT.txtFile: MPL.txtFile: MS-PL-Eula.rtfFile: MS-PL.txtFile: MSR-SSLA.txt Python[edit] Use the standard pathlib.Path.rglob() module to recursively walk a directory with optional filter. from pathlib import Path for path in Path('.').rglob('*.*'): print(path) This uses the standard os.walk() module function to walk a directory tree, and the fnmatch module for matching file names. import fnmatchimport os rootPath = '/'pattern = '*.mp3' for root, dirs, files in os.walk(rootPath): for filename in fnmatch.filter(files, pattern): print( os.path.join(root, filename)) A more strictly comparable port of this 2.3+ code to earlier versions of Python would be: from fnmatch import fnmatchimport os, os.path def print_fnmatches(pattern, dir, files): for filename in files: if fnmatch(filename, pattern): print os.path.join(dir, filename) os.path.walk('/', print_fnmatches, '*.mp3') The old os.path.walk function was a challenge for many to use because of the need to pass a function into the walk, and any arguments to that function through to it ... as shown. It's sometimes useful to pass mutable objects (lists, dictionaries, or instances of user-defined classes) to the inner function ... for example, to collect all the matching files for later processing. Of course the function being passed down through os.path.walk() can also be an instance of an object which maintains it's own data collections. Any matching criteria can be set as attributes of that object in advance and methods of that object can be called upon for later processing as well. That would the an object oriented approach which would obviate the need for the "arguments" to be passed through os.path.walk() at all. (Note: This uses a non-standard replacement to the os.path module) from path import path rootPath = '/'pattern = '*.mp3' d = path(rootPath)for f in d.walkfiles(pattern): print f R[edit] dir("/bar/foo", "mp3",recursive=T) Racket[edit] -> (for ([f (in-directory "/tmp")] #:when (regexp-match? "\\.rkt$" f)) (displayln f))... *.rkt files including in nested directories ... Raku[edit] (formerly Perl 6) Using the File::Find module: use File::Find; .say for find dir => '.', name => /'.txt' $/; Alternatively, a custom solution that provides the same interface as the built-in (non-recursive) dir function, and uses gather/take to return a lazy sequence: sub find-files ($dir, Mu :$test) { gather for dir $dir -> $path { if $path.basename ~~ $test { take $path } if $path.d { .take for find-files $path, :$test }; }} .put for find-files '.', test => /'.txt' $/; Or if you value performance over portability, here's a function that runs the GNU find program and returns a lazy sequence of the files it finds. Parameters are not subjected to shell expansion, and the null-byte (which cannot be present in file paths) is used as the path delimiter, so it should be pretty safe. sub find-files ($dir, :$pattern) { run('find', $dir, '-iname', $pattern, '-print0', :out, :nl?\0?).out.lines;} .say for find-files '.', pattern => '*.txt'; Rascal[edit] //usage example: To list just Rascal source files, Walk(|home:///workspace/|, ".rsc"); module Walkimport String;import IO;public void Walk(loc a, str pattern){ for (entry

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