Unix vs PowerShell Commands: A Comparison (Under ...
Unix vs PowerShell Commands: A Comparison (Under Development)
Unix
Powershell/Cmd
Description
/dev/null out-null
bash cat cd chmod
cp
command, cmd, powershell get-content aliases: cat, gc, type set-location aliases: sl, cd, chdir See set-acl attrib set-itemproperty Copy-item
Instead of a pseudo-device, output can be directed to a command: dosomething | out-null. To redirect other streams use: do-something 2>$null create a subshell output a file to stdout
change directory
change file permissions Windows handles file permissions very differently Copy a file or a directory
curl
cut
date df du echo exit
env
invoke-webRequest -uri file alias: curl Select-Object
get-date get-disk
echo exit
get-childitem Env:
retrieve a file using http
Extract columns from output (not quite the same Display a date, extracting fields Show free storage on the disk Show disk utilization output a string, variables Exit a script or a subshell with an error code List the values of environment variables
exec
export file
find finger getfacl grep
head history
start invoke-commmand (see su)
set get-child
get-child-item (use -filter, -recurse)
N/A get-acl NA -match get-content -head n history
Launch a new process. The Powershell version cannot set a file descriptor, it's not a Windows concept set an environment variable file reports on the type of file by looking at its content. get-child only looks at the extension locate a file based on pattern in it's name
Retrieve ACL permissions General REcursive Pattern match A very poor substitute
Retrieve the 1st n lines of a file Retrieve previous commands
hostname $env:hostname
id
$env:username
kill last less
ln -s locate
stop-process Requires a script and admin privileges out-host -paging alias: oh -p new-alias, set-alias get-command
ls
man
mkdir
more
mv
newgrp ping
popd printf
ps pushd pwd
read
rev rm
rmdir
sed setfacl sleep
sort
get-ChildItem aliases: gl, dir get-help alias man New-Item -itemType Directory alias: mkdir out-host -paging alias: oh -p move-item
N/A test-connection ping is a separate command popd "format string" -f valuelist See also: write-host get-process pushd get-location aliases: gl, pwd read-host
N/A Remove-Item aliases: rm, ri, rmdir, rd, del Remove-item alias rmdir N/A set-acl start-sleep see also Thread.sleep(n) sort-object
ssh
ssh (PowerShell 6)
Name of computer Id of User. Not as much info in PowerShell because Windows is different Kill a process by its pid List of logins, either all or by user id Paginate Output
Create a symbolic link to a file Finds available commands Not sure if PowerShell version can find the directory List files in current directory (note options!) Access help
Create a new directory
paginate output
Renames a file and possibly changes its directory
Detect if a remote machine is available
Remove directory from the stack Format output. The details are a bit complex, includes date formats. List info on current process Add a directory to the stack Display current directory
Input a line from the terminal with a prompt Reverses lines in a file Delete a file or files
Delete a directory
Stream editor Set acl file permissions Pause the current process
Powershell sorts by properties Unix sorts using strings, fields and offsets Log in to local or remote computer
su
New-PSSession
stat
get-itemProperty
tail
get-content -tail n
tac
sort-object
tee test, [[ touch
tee-object get-fileProperty new-item
tree tty ulimit umask uname uptime
tree N/A N/A N/A get-cimInstance get-uptime (PowerShell 6+)
*wait, *trap
wait-event see also: new-event
wc
measure-object
which
who, whoami
get-cmd - not sure if this is quite the same. untested. $env:username
Show file properties Retrieve the last n lines from a file Reverse the order of a command's output Not quite the same in Powershell. One can write a script to add line #s to the output and reverse sort. Splits a pipeline into multiple streams Test file properties Create a file. PowerShell does not set times Recursively show directory structure Show current terminal Shows user resource limits Set default file permissions System info Shows the uptime of current and domain linked servers In Unix this is based on signals. Events in PowerShell are similar but have more information Counts words, lines and characters in a file Shows which version of a program will be run show users Shows current identity
*Not usually covered in CENG151, CENG200
# of commands covered at present: 65
See also: as a start point
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