Change sue(8) to POSIX sh

1 files changed, 12 insertions, 58 deletions

diff --git a/bin/sue b/bin/sue
index 260a19d9..8c4b8910 100755
--- a/bin/sue
+++ b/bin/sue
@@ -1,62 +1,16 @@
-#!/usr/bin/env bash
-
-#
-# sue(8) -- Run sudoedit(8) with an appropriate user on a set of files
-#
-# Author: Tom Ryder
-# Copyright: 2015
-# License: Public domain
-#
-
-# Name self
-self=sue
-
-# Define a function to show usage
-usage() {
-    printf 'USAGE: %s FILE1 [FILE2 ...]\n' \
-        "$self"
-}
-
-# Test the first argument
-case $1 in
-
-    # Give help on stdout if requested
-    -h|--help|-\?)
-        usage
-        exit
-        ;;
-
-    # If no file was given, give help on stderr and bail
-    '')
-        usage >&2
-        exit 1
-        ;;
-esac
-
-# Iterate through the files and check they all have the same owner
+#!/bin/sh
+# Run sudoedit(8) with an appropriate user on a set of files
 user=
 for file ; do
-
-    # Use stat(1) to get the file owner
-    if ! file_owner=$(stat -c %U -- "$file") ; then
-        printf '%s: Failed to run stat(1) on file %s\n' \
-            "$self" "$file" >&2
-        exit 1
-    fi
-
-    # If this is the first file, we'll use its owner as our user
-    if [[ -z $user ]] ; then
-        user=$file_owner
-
-    # If not, and the user we're going to use and this file's owner don't
-    # match, bail with an error
-    elif [[ $user != $file_owner ]] ; then
-        printf '%s: Files do not share a common owner\n' \
-            "$self" >&2
-        exit 1
-    fi
+    file_owner=$(stat -c %U -- "$file") || exit
+    case $user in
+        "$file_owner"|'')
+            user=$file_owner
+            ;;
+        *)
+            printf >&2 'sue: Files do not share a common owner\n'
+            exit 1
+            ;;
+    esac
 done
-
-# If we got this far, there's at least one file and all the files are owned by
-# the same user; we can safely edit them
 exec sudoedit -u "$user" -- "$@"