update.sh: Add script

diff --git a/update.sh b/update.sh
new file mode 100755 (executable)
index 0000000..db4fe55
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+for pkg in adv_cmds basic_cmds bootstrap_cmds developer_cmds \
+       diskdev_cmds doc_cmds file_cmds mail_cmds misc_cmds network_cmds \
+       patch_cmds remote_cmds shell_cmds system_cmds text_cmds; do
+       ./download.sh "${pkg}"
+done