Linux Command Cheat Sheet Share This Cheat Sheet
Linux Command Cheat Sheet
Basic commands
Share This Cheat Sheet
File management
File Utilities
|
Pipe (redirect) output
?nd
search for a ?le
tr -d
translate or delete character
sudo [command]
run < command> in superuser
mode
ls -a -C -h
list content of directory
uniq -c -u
report or omit repeated lines
rm -r -f
remove ?les and directory
split -l
split ?le into pieces
locate -i
?nd ?le, using updatedb(8)
database
wc -w
print newline, word, and byte
counts for each ?le
cp -a -R -i
copy ?les or directory
head -n
output the ?rst part of ?les
du -s
disk usage
cut -s
remove section from ?le
?le -b -i
identify the ?le type
di? -q
?le compare, line by line
mv -f -i
move ?les or directory
join -i
grep, egrep, fgrep -i -v
print lines matching pattern
nohup [command]
run < command> immune to
hangup signal
man [command]
display help pages of
< command>
[command] &
run < command> and send task
to background
>> [?leA]
append to ?leA, preserving
existing contents
> [?leA]
output to ?leA, overwriting
contents
echo -n
display a line of text
xargs
build command line from
previous output
File compression
tar xvfz
create or extract .tar or .tgz
?les
1>2&
Redirect stdout to stderr
fg %N
go to task N
gzip, gunzip, zcat
create, extract or view .gz ?les
jobs
list task
uuencode, uudecode
create or extract .Z ?les
ctrl-z
suspend current task
zip, unzip -v
create or extract .ZIP ?les
rpm
create or extract .rpm ?les
bzip2, bunzip2
create or extract .bz2 ?les
File permission
chmod -c -R
chmod ?le read, write and
executable permission
touch -a -t
modify (or create) ?le timestamp
chown -c -R
change ?le ownership
chgrp -c -R
change ?le group permission
touch -a -t
modify (or create) ?le
timestamp
Network
netstat -r -v
print network information,
routing and connections
telnet
user interface to the TELNET
protocol
tcpdump
dump network tra?c
ssh -i
openSSH client
ping -c
print routing packet trace to
host network
Compiled by Alvin Khoo
rar
create or extract .rar ?les
File Editor
ex
basic editor
vi
visual editor
nano
pico clone
view
view ?le only
emacs
extensible, customizable editor
Memory & Processes
free -m
display free and used system
memory
killall
stop all process by name
sensors
CPU temperature
top
display current processes, real
time monitoring
kill -1 -9
send signal to process
service
[start|stop|restart]
manage or run sysV init script
join lines of two ?les on a
common ?eld
ps aux
display current processes,
snapshot
more, less
view ?le content, one page at a
time
dmesg -k
display system messages
sort -n
sort lines in text ?le
comm -3
compare two sorted ?les, line
by line
cat -s
concatenate ?les to the
standard output
tail -f
output last part of the ?le
Scripting
Disk Utilities
df -h, -i
File system usage
mkfs -t -V
create ?le system
resize2fs
update a ?lesystem, after
lvextend*
fsck -A -N
?le system check & repair
pvcreate
create physical volume
awk, gawk
pattern scanning
mount -a -t
mount a ?lesystem
tsh
tiny shell
fdisk -l
edit disk partition
""
anything within double quotes
is unchanged except \ and $
lvcreate
create a logical volume
umount -f -v
umount a ?lesystem
''
anything within single quote is
unchanged
python
"object-oriented programming
language"
bash
GNU bourne-again SHell
ksh
korn shell
php
general-purpose scripting
language
Misc Commands
pwd -P
print current working directory
bc
high precision calculator
expr
evaluate expression
sublime
yet another text editor
sed
stream editor
csh, tcsh
C shell
cal
print calender
pico
simple editor
perl
Practical Extraction and Report
Language
export
assign or remove environment
variable
source [?le]
load any functions ?le into the
current shell, requires the ?le
to be executable
` [command]
backquote, execute command
date -d
print formatted date
$[variable]
if set, access the variable
Directory Utilities
mkdir
create a directory
rmdir
remove a directory
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