Linux Command Line Cheat Sheet by DaveChild

Source: http://www.cheatography.com/davechild/cheat-sheets/linux-command-line/

Bash Commands uname -a Show system and kernel head -n1 /etc/issue Show distribution mount Show mounted filesystems date Show system date uptime Show uptime whoami Show your username man command Show manual forcommand Bash Shortcuts 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 !* All arguments of previous command ^abc^123 Run previous command, replacing abc with 123 Bash Variables env Show environment variables echo $NAME Output value of $NAMEvariable exportNAME=value Set $NAME to value $PATH Executable search path $HOME Home directory $SHELL Current shell IO Redirection command <file Read input of commandfrom file command >file Write output of commandto file command > /dev/null Discard output ofcommand command >>file Append output to file command1 |command2 Pipe output of command1to command2 Directory Operations pwd Show current directory mkdir dir Make directory dir cd dir Change directory to dir cd .. Go up a directory ls List files

ls Options -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-separated output -Q Quoted output Search Files grep patternfiles Search for pattern in files grep -i Case insensitive search grep -r Recursive search grep -v Inverted search find /dir/ -name name* Find files starting with namein dir find /dir/ -user name Find files owned by name indir find /dir/ -mmin num Find files modifed less thannum minutes ago in dir whereiscommand Find binary / source / manual for command locate file Find file (quick search of system index) File Operations touchfile1 Create file1 cat file1file2 Concatenate files and output less file1 View and paginate file1 file file1 Get type of file1 cp file1file2 Copy file1 to file2 mv file1file2 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 -ffile1 Output last lines of file1 as it changes Process Management ps Show snapshot of processes top Show real time processes kill pid Kill process with id pid pkillname Kill process with name name killallname Kill all processes with names beginning name

Download a PDF of the Linux Command Line cheat sheet! Nano Shortcuts Files Ctrl-R Read file Ctrl-O Save file Ctrl-X Close file Cut and Paste 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 More nano info at: http://www.nano-editor.org/docs.php Screen Shortcuts 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 of terminal. File Permissions chmod 775file Change mode of file to 775 chmod -R 600 folder Recursively chmod folder to 600 chownuser:groupfile Change file owner to userand group to group File Permission Numbers The first digit is the owner permission, the second the group and the third for everyone. Calculate each of the three permission digits by adding the numeric values of the permissions below. 4 read (r) 2 write (w) 1 execute (x)