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Problems with Trigger Scripts and CVS Pre-Commit Hooks

From: Traiano Welcome
Subject: Problems with Trigger Scripts and CVS Pre-Commit Hooks
Date: Sat, 24 Jul 2010 11:50:46 +0200

Hi List

I use cvs to manage BIND9 DNS zone files, and would like to create a
pre-commit hook that will run a syntax checker on the zone file before it's
committed. To do this, I have a shell wrapper that takes the name of the
zone file as an argument and formats a command for the syntax checker. The
shell wrapper is called from the commitinfo file as follows:

---* /usr/local/bin/checkzone %s

And "%s" is supposed to be expanded to the name of the zone file when any
file under "" is committed. The checkzone script is as

#!/bin/sh -x
ZONE=`echo $1 | cut -d "." -f  2,3,4,5,6`
named-checkzone $ZONE $ZONE_FILE

However, when I run the commit, the debug information shows the "%s"
variable is not being expanded to the name of the file, consequently the
shell script does not get the correct argument and the commit fails:

address@hidden ~/]$ cvs commit

+ cut -d . -f 2,3,4,5,6
+ echo %s
+ ZONE=%s
+ named-checkzone %s DB.%s

zone %s/IN: loading from master file DB.%s failed: file not found

cvs commit: Pre-commit check failed
cvs [commit aborted]: correct above errors first!


Please could someone help me shed some light on this for me? I suspect it's
somehow related to the environment the script is being run in, but the
details escape me, and why "%s" is not being expanded is also beyond me at
the moment :-P

Thanks in Advance,
Traiano Welcome

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