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Download

• Linux Command Line Tips
• Unix/Linux Command Cheat Sheet [.pdf]
• Linux Administrator's Quick Reference [.pdf]
• Command Line Interface Commands [.jpg]

Related

• chmod
• Debian
• Fedora
• Red Hat
• Ubuntu
• Unix

• uname -a
• Show system and kernel
• head -n1 /etc/issue
• Show distri-bution
• mount
• Show mounted filesy-stems
• date
• Show system date
• uptime
• Show uptime
• whoami
• Show your username
• man command
• Show manual for command

• CTRL-c
• Stop current command
• CTRL-z
• Sleep program
• CTRL-a
• Go to start of line
• CTRL-e
• Go to end of line
• CTRL-u
• Cut from start of line
• CTRL-k
• Cut to end of line
• CTRL-r
• Search history
• !!
• Repeat last command
• !abc
• Run last command starting with abc
• !abc:p
• Print last command starting with abc
• !$
• Last argument of previous command
• ALT-.
• Last argument of previous command
• !*
• All arguments of previous command
• ^abc-^-123
• Run previous command, replacing abc with 123

• env
• Show enviro-nment variables
• echo $NAME
• Output value of $NAME variable
• export NAME-=v-alue
• Set $NAME to value
• $PATH
• Executable search path
• $HOME
• Home directory
• $SHELL
• Current shell

• cmd < file
• Input of cmd from file
• cmd1 <(cmd2
• Output of cmd2 as file input to cmd1
• cmd > file
• Standard output (stdout) of cmd to file
• cmd
• Discard stdout of cmd
• cmd >> file
• Append stdout to file
• cmd 2> file
• Error output (stderr) of cmd to file
• cmd >&2
• stdout to same place as stderr
• cmd 2>&1
• stderr to same place as stdout
• cmd &> file
• Every output of cmd to file

Anchros

• cmd1 | cmd2
• stdout of cmd1 to cmd2
• cmd1 |& cmd2
• stderr of cmd1 to cmd2

• cmd1 ; cmd2
• Run cmd1 then cmd2
• cmd1 && cmd2
• Run cmd2 if cmd1 is successful
• cmd1 || cmd2
• Run cmd2 if cmd1 is not successful
• cmd
• Run cmd in a subshell

• pwd
• Show current directory
• mkdir dir
• Make directory dir
• cd dir
• Change directory to dir
• cd ..
• Go up a directory
• ls
• List files

• -a
• Show all (including hidden)
• -R
• Recursive list
• -r
• Reverse order
• -t
• Sort by last modified
• -S
• Sort by file size
• -l
• Long listing format
• -1
• One file per line
• -m
• Comma--sep-arated output
• -Q
• Quoted output

• grep pattern files
• Search for pattern in files
• grep -i
• Case insens-itive search
• grep -r
• Recursive search
• grep -v
• Inverted search
• grep -o
• Show matched part of file only
• find /dir/ -name name*
• Find files starting with name in dir
• find /dir/ -user name
• Find files owned by name in dir
• find /dir/ -mmin num
• Find files modifed less than num minutes ago in dir
• whereis command
• Find binary / source / manual for command
• locate file
• Find file (quick search of system index)

• touch file1
• Create file1
• cat file1 file2
• Concat-enate files and output
• less file1
• View and paginate file1
• file file1
• Get type of file1
• cp file1 file2
• Copy file1 to file2
• mv file1 file2
• Move file1 to file2
• rm file1
• Delete file1
• head file1
• Show first 10 lines of file1
• tail file1
• Show last 10 lines of file1
• tail -f file1
• Output last lines of file1 as it changes

• ps
• Show snapshot of processes
• top
• Show real time processes
• kill pid
• Kill process with id pid
• pkill name
• Kill process with name name
• killall name
• Kill all processes with names beginning name

Files

• Ctrl-R
• Read file
• Ctrl-O
• Save file
• Ctrl-X
• Close file

Images

• ALT-A
• Start marking text
• CTRL-K
• Cut marked text or line
• CTRL-U
• Paste text

Navigate File

• ALT-/
• End of file
• CTRL-A
• Beginning of line
• CTRL-E
• End of line
• CTRL-C
• Show line number
• CTRL-_
• Go to line number

Search File

• CTRL-W
• Find
• ALT-W
• Find next
• CTRL-\
• Search and replace

• screen
• Start a screen session.
• screen -r
• Resume a screen session.
• screen -list
• Show your current screen sessions.
• CTRL-A
• Activate commands for screen.
• CTRL-A c
• Create a new instance of terminal.
• CTRL-A n
• Go to the next instance of terminal.
• CTRL-A p
• Go to the previous instance of terminal.
• CTRL-A "
• Show current instances of terminals.
• CTRL-A A
• Rename the current instance.

• 4
• read (r)
• 2
• write (w)
• 1
• execute (x)
• chmod 644 file
• Change mode of file to rw-r--r--
• chmod -R 750 folder
• Recursively chmod folder and contents to rwxr-x---
• chown usr:grp file
• Change file owner to usr, and group to grp