Linux survival sheet (Bash)

^u   erase command line to head
^w   erase last word typed
^Z   send a task to background
^d   quit terminal
fg [num]  revoke the [num] job from background.

cp file{,.old}
is shorthand for
     cp file file.old

export HISTIGNORE="&:ls:[bf]g:exit"
export HISTCONTROL=erasedups
export HISTFILESIZE=10000
export PS1='\u@\h:\w \A$'

set 1 second cap for execution (don't do this in your bash!)
        ulimit -t 1;./a.out
enable core dump for debugging
        ulimit -c unlimited
Restore garbled terminal after accidentally print a binary
        Press [ctrl-v] [ctrl-o] [return]