How to get the count by using grep?

thomas2004ch · 12-01-2009, 07:03 AM

I want to find string in a log file by using:

Code:

grep mytsring mylog.log

It list quite a lot of found strings. But I want to know how many instead of counting it manually.

How?

choogendyk · 12-01-2009, 07:05 AM

Code:

grep mystring mylog.log | wc -l

That counts the number of lines in the output (wc = word count, -l = lines).

mehorter · 12-02-2009, 01:41 AM

I've found the man pages to quite helpful.

from the man page for grep:

Code:

man grep

Quote:

General Output Control
-c, --count
Suppress normal output; instead print a count of matching lines for each input file. With the -v, --invert-match option (see below),
count non-matching lines. (-c is specified by POSIX.)

thus:

Code:

grep mytsring mylog.log

returns many results and

Code:

grep -c mystring mylog.log

will return an integer that indicates the # of hits grep finds.

regards

bsat · 12-02-2009, 02:40 AM

only grep -c will give the number of lines that have the search string.
In case you have the string repeat on a line and want to count them too then try the following

grep -o mystring mylog.log | grep -c mystring