Bash Rules ========== Public domain ******************************************************************************** ### Environment Variables these variables can be saved in **~/.bash_profile** or **~/.bashrc** decide which command lines should not be saved on the history list HISTIGNORE="&:[ ]*:ls:exit" list of search paths for commands: PATH="$PATH:/usr/local/sshfs/bin/" list of directories used as search path for the "cd" command CDPATH="/root/Desktop" list of directories used as search path for the "man" command MANPATH="$MANPATH:/usr/local/sshfs/share/man/" Colorful prompt # Bright PS1="\n\[\e[1;31m\]\t - \d\n\[\e[1;32m\]\u@\H:\[\e[1;36m\]\w \\$ \[\e[0m\]" # Dark PS1="\n\[\e[0;31m\]\@ - \d\n\[\e[0;33m\]\u@\H:\[\e[0;32m\]\w\\$ \[\e[0m\]" Login timeout seconds TMOUT="600" Current process PID echo $$ The number of seconds the script has been running echo $SECONDS ******************************************************************************** ### Command Substitution old-style kill -TERM `cat /var/run/ppp0.pid` new-style kill -TERM $(cat /var/run/ppp0.pid) ******************************************************************************** ### Special shorcuts run last command !! reuse last parameter (you can use <ESC+.> instead) cd !$ clear command line to start [ctrl-u] clear command line to end [ctrl-k] jump to end of line [ctrl-e] jump to start of line [ctrl-a] upper case to end of word [alt-u] lower case to end of word [alt-l] word forward [alt-f] word backward [alt-b] run last command containing word !?word?[space] first parameter of last command !:1[space] all arguments of the previous command !-1:1*[space] third argument from the command before the last one !-2:3[space] search history(can be repeated) [ctrl+r] ******************************************************************************** ### Standard Error Redirection 1 represents stdout 2 represents stderr stdout to file : command > file stderr to file : command 2> file stdout to stderr : command 1>&2 stderr to stdout : command 2>&1 stderr and stdout to file : command > /dev/null 2>&1 command &> /dev/null ******************************************************************************** _BY: Pejman Moghadam_ _TAG: bash_ _DATE: 2009-01-16 07:21:03_