From 4ef4153814624c3eb0cade2e539800747d19ecd4 Mon Sep 17 00:00:00 2001
From: Ian Kelling <ian@iankelling.org>
Date: Wed, 23 Apr 2014 00:53:47 -0700
Subject: [PATCH] improve iso handling and doc string

---
 ex          | 17 +++++++++++++----
 ex-function | 17 +++++++++++++----
 2 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/ex b/ex
index 391570e..5ca021e 100755
--- a/ex
+++ b/ex
@@ -15,11 +15,13 @@
 
 ex() {
     local help="Usage: ex [--help] FILE...
-Extract each FILE according to its extension."
+Extract each FILE according to its extension.
+7z bz2 deb gz iso rar rpm tar xz zip & variations.
+See source for exact file extensions."
     if [[ $1 == --help ]]; then
         echo "$help"
     fi
-    local x
+    local x super
     for x in "$@"; do
 	case "$x" in
 	    *.tar.bz2 | *.tbz2 ) tar xvjf "$x" ;;
@@ -34,13 +36,20 @@ Extract each FILE according to its extension."
             *.rpm ) rpm2cpio "$x" | cpio --extract --make-directories --verbose ;;
 	    *.tar.xz ) tar Jxvf "$x" ;;
             *.iso )
+                if [[ $EUID != 0 ]]; then
+                    if [[ $(sudo -v) == Sorry* ]]; then
+                        echo error: need superuser priveledge for iso file
+                        return 1
+                    fi
+                    super=sudo
+                fi
                 local temp_dir=$(mktemp -d)
                 losetup -f
-                s mount -o loop "$x" "$temp_dir"
+                $super mount -o loop "$x" "$temp_dir"
                 local dir="${x%%.iso}"
                 mkdir "$dir"
                 cp -av "$temp_dir"/* "$dir"
-                s umount "$temp_dir"
+                $super umount "$temp_dir"
                 ;;
             *.r[0-9][0-9]|*.rar ) unrar x "$x" ;;
 	    *)  echo "I don't kno how to extract $x";;
diff --git a/ex-function b/ex-function
index 91733c3..7980023 100644
--- a/ex-function
+++ b/ex-function
@@ -15,11 +15,13 @@
 
 ex() {
     local help="Usage: ex [--help] FILE...
-Extract each FILE according to its extension."
+Extract each FILE according to its extension.
+7z bz2 deb gz iso rar rpm tar xz zip & variations.
+See source for exact file extensions."
     if [[ $1 == --help ]]; then
         echo "$help"
     fi
-    local x
+    local x super
     for x in "$@"; do
 	case "$x" in
 	    *.tar.bz2 | *.tbz2 ) tar xvjf "$x" ;;
@@ -34,13 +36,20 @@ Extract each FILE according to its extension."
             *.rpm ) rpm2cpio "$x" | cpio --extract --make-directories --verbose ;;
 	    *.tar.xz ) tar Jxvf "$x" ;;
             *.iso )
+                if [[ $EUID != 0 ]]; then
+                    if [[ $(sudo -v) == Sorry* ]]; then
+                        echo error: need superuser priveledge for iso file
+                        return 1
+                    fi
+                    super=sudo
+                fi
                 local temp_dir=$(mktemp -d)
                 losetup -f
-                s mount -o loop "$x" "$temp_dir"
+                $super mount -o loop "$x" "$temp_dir"
                 local dir="${x%%.iso}"
                 mkdir "$dir"
                 cp -av "$temp_dir"/* "$dir"
-                s umount "$temp_dir"
+                $super umount "$temp_dir"
                 ;;
             *.r[0-9][0-9]|*.rar ) unrar x "$x" ;;
 	    *)  echo "I don't kno how to extract $x";;
-- 
2.30.2