grep mutiple erpressions

estumator · #1 (**permalink**) 02-23-04, 09:28

I want to use grep to ckeck file errors, in which case ,I used
number_of_errors=$(grep -v -c (pattens) file)
there r 2 problems , firstly , I want to use mutiple pattens and match any one of them (in this case if non of them is matched, since -v is used as an option).
2ndly, I want to assign the returned number to a variable, and my expression is incorrect.....
Any help would be appreciated.^_^
thanks for ur attention.

aigles · #2 (**permalink**) 02-23-04, 09:42

use 'egrep' or 'grep -E' :

Code:

#Count lines with ERROR or WARNING
count1=$(egrep -c 'ERROR|WARNING) file)

#Count lines without ERROR and WARNING
count2=$(egrep -v -c 'ERROR|WARNING' file)

estumator · #3 (**permalink**) 02-23-04, 09:57

It works ,many thanks.

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