Some usage messages added

1 files changed, 15 insertions, 2 deletions

diff --git a/is_built b/is_built
index f789e4f..60f24e9 100755
--- a/is_built
+++ b/is_built
@@ -1,11 +1,24 @@
 #!/bin/bash
-# Detect is a package is installed or in a database
+usage() {
+    echo "$0 "
+    echo
+    echo "Detect is a package is installed or in a database"
+    echo
+    echo "Example usage: is_built \"pcre>=20\""
+}
+
+while getopts 'h' arg; do
+    case $arg in
+        h) usage; exit 0 ;;
+        *) usage; exit 1 ;;
+    esac
+done
 
 # Checks for package, if -T returns non-zero output, egrep will return 0
 # because it finds it, so we negate the value to say it's not built.
 # -Sp works backwards, it will print output only when the package already
 # exists
-# Example usage: is_built "pcre>=20"
+
 !(sudo pacman -T "$1" | egrep "*" >/dev/null) || \
 sudo pacman -Sp "$1" --print-format "%n-%v" 2>/dev/null | egrep "*" >/dev/null