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 will be that of the most recent command.
exit
can be issued at the command line to close a window (log out).
if [ $# -eq 0 ]; then
echo "Usage: $0 [-c] [-d] file(s)"
exit 1 # Error status
fi