1 files changed, 13 insertions, 4 deletions

diff --git a/dmenu-unmount b/dmenu-unmount
index 2771ecc..8f7a27f 100755
--- a/dmenu-unmount
+++ b/dmenu-unmount
@@ -1,14 +1,20 @@
 #!/bin/sh
 
 # Prompts selection for mounted devices and unmounts the selected one
+# Requires: udevil, dmenu (or similar), notify-send or similar (optional)
+
 # Usage: dmenu-unmount [-m menu] [-w writer]
 # Example: dmenu-unmount -m slmenu -w echo
-# Requires: udevil, dmenu (or similar), notify-send or similar (optional)
 
 menu=dmenu
 #writeout=notify-send
 writeout="notify push"
 
+usage() {
+        echo "Usage: dmenu-unmount [-m MENU] [-w WRITER]"
+        echo "Example: dmenu-unmount -m slmenu -w echo"
+}
+
 while getopts "m:w:" opt; do
         case "$opt" in
                 m)
@@ -17,9 +23,13 @@ while getopts "m:w:" opt; do
                 w)
                         writeout="$OPTARG"
                         ;;
+                *)
+                        usage
+                        exit 1
+                        ;;
         esac
 done
-shift `expr $OPTIND - 1`
+shift $((OPTIND - 1))
 
 listdev=$(grep "media" /proc/mounts | sed 's/\/media.*\///g' | \
           awk '{print $1" ("$2")"}')
@@ -31,11 +41,10 @@ else
         if [ -n "$seldev" ]; then
                 udevil unmount "$seldev"
                 failed=$(udevil info "$seldev" | grep mounted | awk '{print $3}')
-                if [ $failed -eq 1 ]; then
+                if [ "$failed" -eq 1 ]; then
                         $writeout "Unmount FAILED" "Device is still mounted!"
                 else
                         $writeout "Device unmounted"
                 fi
         fi
 fi
-# notify-send "$(udisksctl unmount -b $seldev)"