added some help to usage of build-packages

1 files changed, 5 insertions, 0 deletions

diff --git a/bin/build-packages b/bin/build-packages
index 745335e..0939435 100755
--- a/bin/build-packages
+++ b/bin/build-packages
@@ -18,6 +18,11 @@ usage() {
   >&2 echo '               Build the given package without asking / reporting to the'
   >&2 echo '               build master (except -u is given). Cannot be combined with'
   >&2 echo '               -n, -p, -t or -x.'
+  >&2 echo '             where:'
+  >&2 echo '               - git-revision: packages-HEAD or community-HEAD or a valid commit'
+  >&2 echo '               - git-mod-revision: work-tree or a valid commit'
+  >&2 echo '             example:'
+  >&2 echo '               build-package -l   which.packages-HEAD.work-tree.core'
   >&2 echo '  -n count:    Build $count packages (if available), then exit.'
   >&2 echo '               $count=0 is interpreted as infinity.'
   >&2 echo '               The default is $count=1 or 0 iff -t or -x is given.'