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BlueSkies
Asked: 2021-07-24 04:42:09 +0800 CST

Grep - How to suppress the "Is a directory" line?

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When running

grep 'string' *

I'm getting the following messages:

grep: some-directory: Is a directory
grep: other-directory: Is a directory

How to suppress those messages?

command-line

2 Answers

  1. -s, --no-messages: Suppress error messages about nonexistent or unreadable files.

    grep -s 'string' *
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  2. There are at least two ways to suppress error messages ("Is a directory"):

    1. grep -s 'string' *

    2. grep 'string' * 2> /dev/null

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