Implement options verbose quiet dry-run help.

1 files changed, 34 insertions, 3 deletions

diff --git a/localrmstaleaccounts b/localrmstaleaccounts
index b6e9a05..dbb92f0 100755
--- a/localrmstaleaccounts
+++ b/localrmstaleaccounts
@@ -2,21 +2,52 @@
 
 set -e
 
+PRG=$(basename "$0")
+
 exit1() {
 	echo >&2 "ERROR: $1"
 	exit 1
 }
 
+TEMP=$(getopt -s sh -o vqnh --long verbose,quiet,dry-run,help -n "$PRG" -- "$@") || exit1 "Internal getopt error"
+eval set -- "$TEMP"
+
+usage() {
+	cat <<EOF >&2
+Usage: $PRG [opts...] USER [USER...]
+
+ -v, --verbose               increase verbosity
+ -q, --quiet                 suppress non-error messages
+ -n, --dry-run               perform a trial run with no changes made
+ -h, --help                  show this help
+EOF
+	exit 0
+}
+
+VERBOSE=
+QUIET=
+DRY_RUN=
+while true ; do
+	case "$1" in
+		-v|--verbose) VERBOSE=1; shift;;
+		-q|--quiet) QUIET=1; shift;;
+		-n|--dry-run) DRY_RUN=1; shift;;
+		-h|--help) usage;;
+		--) shift; break;;
+		*) exit1 "Internal getopt parsing error";;
+	esac
+done
+
 warn() {
-	echo >&2 "WARNING: $1"
+	[ -n "$QUIET" ] || echo >&2 "WARNING: $1"
 }
 
 info() {
-	echo >&2 "INFO: $1"
+	[ -n "$QUIET" ] || [ -z "$VERBOSE" ] || echo >&2 "INFO: $1"
 }
 
 remove_account() {
-	localrmaccount "$1"
+	[ -n "$DRY_RUN" ] || localrmaccount "$1"
 }
 
 for user in $@; do