How to get the lines that contain -R with grep

grep

How can I find "-R" in files with grep?
I tried grep "-R" *.GNU to get the lines that contain -R, but it returns nothing.

Best Answer

Try:

grep -- -R *.GNU

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

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Grep Find Recursive – How to Find Files That Do NOT Contain a Text String

find . -type f | xargs grep -H -c 'shared.php' | grep 0$ | cut -d':' -f1

find . -type f -exec grep -H -c 'shared.php' {} \; | grep 0$ | cut -d':' -f1

Here we are calculating number of matching lines(using -c) in a file if the count is 0 then its the required file, so we cut the first column i.e. filename from the output.

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

@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' .

Best Answer

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Grep Find Recursive – How to Find Files That Do NOT Contain a Text String

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

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