add group role, rename default group

roles/pubnix/bin/group.sh

@@ -0,0 +1,66 @@
+#!/bin/sh
+
+rootdir=""
+group=""
+action=""
+
+usage() {
+    echo "Usage: $0 -g group -a action"
+    echo "Valid actions: present, absent"
+    exit 1
+}
+
+run() {
+    echo $*
+    $*
+}
+
+OPTIND=1
+while getopts d:g:a: opt ; do
+    case $opt in
+        d)
+            rootdir="$OPTARG"
+            ;;
+        g)
+            group="$OPTARG"
+            ;;
+        a)
+            action="$OPTARG"
+            ;;
+        *)
+            usage
+            ;;
+    esac
+done
+
+shift $(($OPTIND - 1))
+
+if test -z "$group" -o -z "$action"; then
+    usage
+fi
+
+root=""
+
+if test -n "$rootdir"; then
+    root="-R $rootdir"
+fi
+
+case "$action" in
+    present)
+        if pw $root group show "$group" > /dev/null 2>&1; then
+            if pw $root group show "$group" | grep -q LOCKED; then
+                echo "$group exists."
+            fi
+        else
+            run pw $root group add "$group"
+        fi
+        ;;
+    absent)
+        if pw $root group show "$group" > /dev/null 2>&1; then
+            run pw $root group del "$group"
+        fi
+        ;;
+    *)
+        usage
+        ;;
+esac