Count number of occurrences of a pattern in a file (even on same line)
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by jrdioko
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Published on 2010-05-25T21:44:51Z
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2010/05/25
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When searching for number of occurrences of a string in a file, I generally use:
grep pattern file | wc -l
However, this only finds one occurrence per line, because of the way grep works. How can I search for the number of times a string appears in a file, regardless of whether they are on the same or different lines?
Also, what if I'm searching for a regex pattern, not a simple string? How can I count those, or, even better, print each match on a new line?
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