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03_vblade_usage.patch: Used for avoiding calling vbladed without arguments,
and while at it, add the usage command line.
Index: vblade-20/vbladed
===================================================================
--- vblade-20.orig/vbladed
+++ vblade-20/vbladed
@@ -3,4 +3,14 @@
# output is directed to syslogd
#
+# Although logging goes to syslog, let's going to
+# protect ourselves against the most common way or
+# calling vbladed: without arguments. While at it, we guard
+# ourselves against wrong number of parameters.
+if [ $# -lt 4 ]
+then
+ echo "usage: ./vblade <shelf> <slot> <ethn> <device>" >&2
+ exit 1
+fi
+
sh -c "`dirname $0`/vblade $* < /dev/null 2>&1 | logger -t vbladed" &
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