Forum: Cfengine Help Subject: regex help Author: neilhwatson Link to topic: https://cfengine.com/forum/read.php?3,21705,21705#msg-21705
I have a line that I want to insert into a file. I also want to remove any other permutations of that line from the file. Appending is easy deleting without deleting the correct line is a challenge. I've tried some lookaheads and lookbehinds but I'm not very good with these types of regular expressions. This is the correct line 00 3 1 * * /usr/scripts/util/distributed-multipath-ck.sh 2>&1 > /dev/null This is the regext to remove the unwanted lines (?<!00 3 1 \* \*)\s*/usr/scripts/util/distributed-multipath-ck.sh\s*(?!2>&1 > /dev/null) Here is the target file 45 * * * * /var/cfengine/bin/cf-execd -F > /dev/null 2>&1 || /usr/local/sbin/cf-failsafe.sh 01 3 1 * * /usr/scripts/util/distributed-multipath-ck.sh 2>&1 > /dev/null 15 00 * * * logger -p local0.notice `uname -n`:l0gg3r 0 7 1 * * /usr/scripts/util/lsa > /dev/null 2>&1 00 3 1 * * /usr/scripts/util/distributed-multipath-ck.sh 2>&1 > /dev/null My goal is that line two should be removed because it is an unwanted permutation of the desired shell script. I suspect the problem is with the negative look behind but I don't how to fix it. _______________________________________________ Help-cfengine mailing list Help-cfengine@cfengine.org https://cfengine.org/mailman/listinfo/help-cfengine
