How to grep a directory based on the contents of two successive lines

grepregular expression

How can I grep a directory for lines that contain "Foo", but only get matches when the next line also contains "Bar"?

Best Answer

@warl0ck pointed me in the right direction with pcregrep, but I said "contains", not "is", and I asked about a directory, not a file.

This seems to work for me.

pcregrep -rMi 'Foo(.*)\n(.*)Bar' .

Related Solutions

How to get the lines that contain -R with grep

Try:

grep -- -R *.GNU

The -- indicates end of options so that -R is seen as an argument instead of an option to grep

Linux – How to grep two things where one has option -w

The word boundary has a similar effect to -w, but can be used as part of the expression.

‘\b’
Match the empty string at the edge of a word.
[...]
‘\<’
Match the empty string at the beginning of word.
‘\>’
Match the empty string at the end of word.

To match bar only when it's the whole word, but foo anywhere (including inside longer words):

grep -E 'foo|\<bar\>'

Best Answer

Related Solutions

How to get the lines that contain -R with grep

Linux – How to grep two things where one has option -w

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