X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=etc%2Fgrml%2Fscript-functions;h=58e33dbc43f2c89a231b87915011c2aab6b074e9;hb=5c716b322f326200b851bdd3c8751cb1ab475e6e;hp=bc30ca5c83547bef0c583ab3e4f45f8de0147665;hpb=aae4ec9f95e42b6423996147d813a280ad5166ac;p=grml-etc-core.git

diff --git a/etc/grml/script-functions b/etc/grml/script-functions
index bc30ca5..58e33db 100644
--- a/etc/grml/script-functions
+++ b/etc/grml/script-functions
@@ -3,7 +3,7 @@
 # Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
 # Bug-Reports:   see http://grml.org/bugs/
 # License:       This file is licensed under the GPL v2.
-# Latest change: Sam Sep 16 13:08:16 CEST 2006 [mika]
+# Latest change: Mit Okt 24 09:34:48 CEST 2007 [mika]
 ################################################################################
 
 # {{{ set default PATH
@@ -14,7 +14,7 @@ setpath(){
 
 # {{{ check for root-permissions
 check4root(){
-  if [ "$UID" != 0 ] ; then
+  if [ "$(id -u 2>/dev/null)" != 0 ] ; then
     echo 1>&2 "Error: please run this script with uid 0 (root)." ; return 1
   fi
 }
@@ -22,7 +22,7 @@ check4root(){
 
 # {{{ check for user permissions
 check4user(){
-  if [ "$UID" == 0 ] ; then
+  if [ "$(id -u 2>/dev/null)" = 0 ] ; then
     echo 1>&2 "Error: please do not run this script with uid 0 (root)." ; return 1
   fi
 }
@@ -141,5 +141,47 @@ mount_sys(){
 }
 # }}}
 
+# char *reverse_list(list) {{{
+#
+#   Returns the reversed order of list
+#
+reverse_list() {
+  local ret
+  ret=''
+  while [ "$#" -gt 0 ] ; do
+    if [ -z "${ret}" ] ; then
+      ret="$1"
+    else
+      ret="$1 ${ret}"
+    fi
+    shift
+  done
+  printf '%s' "${ret}"
+}
+#}}}
+
+# bool is_older_than(reference, files/dirs to check) {{{
+#
+#   return 0 if any of the files/dirs are newer than
+#   the reference file
+#
+#   EXAMPLE: if is_older_than a.out *.o ; then ...
+is_older_than() {
+  local x
+  local ref="$1"
+  shift
+
+  for x in "$@" ; do
+    [ "${x}" -nt "${ref}" ] && return 0
+
+    if [ -d "${x}" ] ; then
+      is_older_than "${ref}" "${x}"/* && return 0
+    fi
+  done
+
+  return 1
+}
+#}}}
+
 ## END OF FILE #################################################################
 # vim:foldmethod=marker tw=80 ai expandtab shiftwidth=2 tabstop=2