sharefile

commit 5a7add0577ace67c72cf4f3e503e3f3fe9c5a1fb
parent 48fa57204ab30e327c582b3590b71b72ec1db46e
Author: William Casarin <bill@casarin.me>
Date:   Mon, 22 Feb 2016 16:40:56 -0800

error handling

Diffstat:
M
hashname
 | 
7
+++++++

1 file changed, 7 insertions(+), 0 deletions(-)
diff --git a/hashname b/hashname
@@ -1,5 +1,12 @@
 #!/usr/bin/env bash
 
+usage() {
+  echo "hashname <filename>"
+  exit 1
+}
+
+[[ -z "$1" ]] && usage
+
 hash=$(sha1sum "$1" | awk '{ print $1 }')
 hashlen=${2:-16}
 shorthash=${hash:0:$hashlen}