1 files changed, 16 insertions, 0 deletions
diff --git a/src/install-xpi b/src/install-xpi
index 314fdd4..071507c 100755
--- a/src/install-xpi
+++ b/src/install-xpi
@@ -144,6 +144,22 @@ def get_first_package():
 	packages = map(lambda x: x[x.find(":")+1:].strip(), package_lines)
 	return packages[0]
 
+def usage(output):
+	print >> output, """Usage: %s [options] <xpi-file>
+
+Options:
+  -x, --exclude=<file>         do not install specified file
+  -l, --link=<directory>       link from directory to extension directory
+  -p, --package=<value>        install the extension into specified package
+      --preserve-permissions   do not adjust the file permissions
+  -r, --remove-license-files   do not install license files
+
+General options:
+  -h, --help                   display this help and exit
+  -v, --verbose                print more information
+
+See %s(1) for more info.""" % (sys.argv[0], os.path.basename(sys.argv[0]))
+
 if __name__ == "__main__":
 	try:
 		long_opts = ["exclude", "help", "link", "package",