#TIL : Internal Variables in BASH
Your current working directory, so you don’t have to use
Your previous working directory
Note : You can jump directly to it by the command
The number of seconds the script has been running
You can use it for profiling or limiting timeout
TIME_LIMIT=60 START=$SECONDS while [ $(($SECONDS - START)) -le "$TIME_LIMIT" ] do ## Your work here done echo "It takes $SECONDS seconds to get here !"
Get random integer number, for getting random name or just roll a dice ;)