Off-Topic > Off-Topic - Tiny Tux's Corner

RegEx to find error but exclude no error

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remus:
Hi all,

I"m trying to put together a error check in my daily file backup bash script.

Here's my error check section


--- Code: ---# Check the log file for errors
DateTime=$(date +"%d/%m/%Y %H:%M")
ErrorCheck=$(grep -ciE "fail|can't" $LOGFILE)
if [ $ErrorCheck -gt 0 ]
then
 EmailSubject=$ErrorCheck"(s) Errors Detected in DB Backup $DateTime"
else
 EmailSubject="DSS DB Backup $DateTime"
fi

--- End code ---

I've noticed that this will specifiy an error in my email subject if it finds "no error" of course.
Can someone suggest a RegEx that will only find error if its not preceeded by "no " ?

Thanks :)

curaga:
grep -vi "no error" $LOGFILE | grep -ciE ...

remus:
thanks for the input curaga, its still finding my excluded string though.

Here's my update


--- Code: ---# Check the log file for errors
DateTime=$(date +"%d/%m/%Y %H:%M")
ErrorCheck=$(grep -vi "No errors" $LOGFILE | grep -ciE "error|fail|can't" $LOGFILE)
if [ $ErrorCheck -gt 0 ]
then
 EmailSubject=$ErrorCheck" Errors Detected in DSS DB Backup $DateTime"
else
 EmailSubject="DSS DB Backup $DateTime"
fi

--- End code ---

Did I make a simple syntax error maybe ?

curaga:
Yes, remove the second $LOGFILE. The second grep should grep the pipe.

remus:
That nailed it !
Thanks curaga :)

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