1 files changed, 157 insertions, 0 deletions
diff --git a/shop b/shop
new file mode 100755
index 0000000..c2e01fe
--- /dev/null
+++ b/shop
@@ -0,0 +1,157 @@
+#!/bin/bash
+#
+# shop - Show Permissions at all levels of a given path
+#
+#        With `tree(1)` you start at a trunk and show all leaves that
+#        originate from that trunk, optionally showing permissions.
+#        `shop` starts at a leaf and shows the permissions back to a
+#        trunk.
+#
+# CREATED:  2009-09-03 17:30
+# MODIFIED: 2009-11-17 11:05
+
+_NAME=$(basename $0)
+_VERSION=1.0
+
+# DEFAULTS
+unset octal               # use text mode instead of octal mode
+level=-1                  # traverse all the way up to /
+trunk='/'                 # traverse all the way up to /
+pad=17                    # padding for pathname
+
+usage() {
+    cat <<EOT
+Usage: $_NAME [-L N] [-o] [-t PATH] [PATH1..]
+
+Options:
+  -L, --level N      traverse N levels up the tree
+  -o, --octal        show octal mode instead of human readable mode 
+  -t, --trunk PATH   only traverse up to PATH instead of / (root)
+                       - takes precedence over --level
+  -p, --pad N        allow USER:GROUP N characters before directory name
+                       default: 17
+
+  -h, --help         show this message
+      --version      show version info
+EOT
+}
+
+_shop() {
+    [ $octal ] && stat_str="%a" || stat_str="%A"
+
+    stats=( $(stat -c "$stat_str %U:%G %n" "$1") )
+
+    if [ $octal ]; then
+        # `stat -c "%a"` only returns a 4 digit mode when the first digit is 
+        # nonzero, yet `stat` always returns a 4 digit mode.  how annoying...
+        [ ${#stats} -eq 3 ] && echo -n "0"
+    fi    
+
+    printf "%s %-${pad}s ${stats[@]:2}\n" "${stats[@]:0:2}"
+}
+
+main() {
+    arg="$1"
+    if [ -z "$arg" ]; then
+        # user didn't supply an arg, use current working dir
+        arg="$PWD"
+    fi
+
+    until [ -z "$arg" ]; do
+        if ! [ -a "$arg" ]; then
+             echo "error: $arg does not exist"
+             return 1
+        fi
+
+        # if $arg is a directory, prime the directory stack, else use 
+        # the parent dir of $arg to prime the stack
+        if [ -d "$arg" ]; then
+            cd "$arg" || return 1
+            unset file_arg
+        else
+            cd $(dirname -- "$arg") || return 1
+            file_arg=1
+            let "level -=1"
+        fi
+
+        start_dir=$PWD
+
+        # populate directory stack with $level levels on the path to
+        # the $trunk
+        while [ "$PWD" != "$trunk" ]; do
+            if [ $level -gt 0 ] || [ $level -lt 0 ]; then
+                let "level -= 1"
+                pushd .. &> /dev/null 
+            elif [ $level -eq 0 ]; then
+                break;
+            fi
+        done
+
+        # display the permissions for each level
+        while [ "$PWD" != "$start_dir" ]; do
+            _shop "$PWD"
+            popd &> /dev/null
+        done
+        _shop "$PWD"
+
+        # leaf was a file, run _shop on this file as well
+        if [ $file_arg ]; then
+            _shop "${PWD}/$(basename -- "$arg")"
+        else
+            cd .. || return 1
+        fi
+
+        # user passed multiple leafs, separate output for each leaf
+        if [ $# -gt 1 ]; then
+            echo
+        fi
+
+        shift
+        arg="$1"
+    done
+}
+
+declare -a args
+until [ -z "$1" ]; do
+    case "$1" in
+        -L|--level) level="$2"
+                    shift 2
+                    ;;
+
+        -o|--octal) octal=1
+                    shift
+                    ;;
+
+        -t|--trunk) trunk="$(readlink -f $2)"
+                    shift 2
+                    ;;
+
+        -p|--pad) pad="$2"
+                  shift 2
+                  ;;
+
+        -h|--help) usage
+                   exit
+                   ;;
+
+        --version) echo "$_NAME v$_VERSION"
+                   exit
+                   ;;
+
+        --) shift
+            args=( "${args[@]}" "$@" )
+            break
+            ;;
+
+        -*) echo -e "$_NAME: unknown option: $1\n"
+            usage
+            exit
+            ;;
+
+        *) args[${#args[*]}]="$1"
+           shift
+           ;;
+    esac
+done
+
+main "${args[@]}"