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I wish to pass each line of a file as a grep pattern to be searched in data.txt file.

Thus, i need cat allsearchstrings.txt | grep <should be lines of allsearchstrings.txt> data.txt

cat allsearchstring

: 'CANV'
: 'CANV_MATCH'
: 'MY'

I think xargs could be the solution but I'm not sure how-to.

Note: the content of allsearchstrings.txt may have single quotes '

Could you please suggest?

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    Are you sure you want to do that? grep should be able to read patterns from a file directly (with the -f option)
    – steeldriver
    Apr 25, 2022 at 0:26
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    It not a file but output of some complex command which i wanted to avoid sharing.
    – Ashar
    Apr 25, 2022 at 0:40
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    ... in that case you can try complex_command | grep -F -f - data.txt or grep -F -f <(complex_command) data.txt if your shell supports process substitution
    – steeldriver
    Apr 25, 2022 at 0:57
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    If it's not a file but command output, then in the future, be clear about what it is instead of stating I wish to pass each line of a file as a grep pattern and using cat allsearchstrings.txt as an example. That doesn't line up with what's actually going on and makes it more difficult for people to answer your question.
    – Nasir Riley
    Apr 25, 2022 at 1:27
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    @steeldriver yes, it answers my question
    – Ashar
    Apr 25, 2022 at 1:39

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