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exit

exit [n ]

Exit a shell script with status n (e.g., exit 1 ). n can be 0 (success) or nonzero (failure). If n is not given, exit status is that of the most recent command. exit can be issued at the command line to close a window (log out). Exit statuses can range in value from 0 to 255.

Example

if [ $# -eq 0 ]
then
   echo "Usage:  $0 [-c] [-d] file(s)" 1>&2
   exit 1		# Error status
fi


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