is_built: document exit codes

1 files changed, 10 insertions, 5 deletions

diff --git a/src/is_built b/src/is_built
index 6aa9b66..e6797fd 100755
--- a/src/is_built
+++ b/src/is_built
@@ -2,23 +2,28 @@
 
 cmd=${0##*/}
 usage() {
-	echo "Usage: $cmd pkgname pkgver"
+	echo "Usage: $cmd [-h] pkgname pkgver"
 	echo
 	echo "Detect if a given package version is already in repos"
-	echo "Assuming you want greater or equal"
+	echo "Assuming you want greater or equal."
 	echo
 	echo "Example usage: $cmd 'pcre' '20'"
+	echo
+	echo "Exit status:"
+	echo "  0: The package is built"
+	echo "  1: The package has not built"
+	echo " >1: There was an error"
 }
 
 while getopts 'h' arg; do
 	case $arg in
 		h) usage; exit 0 ;;
-		*) usage >&2; exit 1 ;;
+		*) usage >&2; exit 2 ;;
 	esac
 done
 if [[ $# != 2 ]]; then
-	usage >&2;
-	exit 1
+	usage >&2
+	exit 2
 fi
 
 pkg=${1}