__Bash Cheat Sheet__ -d check if the file is a directory \\ -e check if the file exists \\ -f check if the file is a regular file \\ -g check if the file has SGID permissions \\ -r check if the file is readable \\ -s check if the file's size is not 0 \\ -u check if the file has SUID permissions \\ -w check if the file is writeable \\ -x check if the file is executable \\ Checks equality between numbers:\\ x -eq y Check is x is equals to y \\ x -ne y Check if x is not equals to y \\ x -gt y Check ifx is greater than y \\ x -lt y Check if x is less than y \\ Checks equality between strings:\\ x = y Check if x is the same as y \\ x != y Check if x is not the same as y \\ -n x Evaluates to true if x is not null \\ -z x Evaluates to true if x is null \\ __Trapping CTRL-C in a Bash Script__ {code: none} #!/bin/bash # trap ctrl-c and call ctrl_c() trap ctrl_c INT function ctrl_c() { echo "** Trapped CTRL-C!" } for i in `seq 1 5`; do sleep 1 echo -n "." done {code} 2005-12-01 19:50:38.0 2005-08-25 23:24:51.0