Need help with awk or sed

[g2345c]

Hi,
Please help me to write an awk or sed statement that do:

1. if see any line that started with "local0." (local0 follow by a dot) replace the entire line with "local0.debug /var/test"
2. If I dont see any line that started with "local0." append "local0.debug /var/test" to the file

here is that I have but It only append(2) but not replace(1)

awk '/^local0./{++n}{print}END{if(!n)print "\nlocal0.debug \/var\/test"}' syslog.conf > syslog.conf.11


Please help

 

[PHV]

awk '
/^local0\./{++n;print "local0.debug /var/test";next}
{print}
END{if(!n)print "\nlocal0.debug /var/test"}
' syslog.conf > syslog.conf.11

Hope This Helps, PH.
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