Also don't forget && and ||, which only run the next prog on return of a zero exit status or non-zero exit status respectively. Also, ; between commands is the

Also don't forget && and ||, which only run the next prog on return of a zero exit status or non-zero exit status respectively. Also, ; between commands is the equivalent of running each command on a seperate line (command independent of previous command exit status). & = run in background ; = execute sequentially && = AND operator || = OR operator ! = NOT operator &&-|| = ANDOR operator {} = combine command operator () = precedence operator =~ = regex operator http://www.gnu.org/software/bash/manual/bashref.html#Conditional-Constructs http://www.gnu.org/software/bash/manual/bashref.html#Conditi...