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I need to replace '30 by `30 in a bunch of files. The following does not work:

grep -Rl "'30"  /myDir | xargs  sed -i "s/'30/`30/g"

How do I fix it?

I am on a Fedora 26 machine.

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  • What output are you trying to achieve? You might try tr "'" '`' instead of sed
    – glenn jackman
    Sep 12, 2018 at 15:28
  • I need to replace '30 by `30 in a bunch of tex files.
    – mario
    Sep 12, 2018 at 15:34
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    That's the kind of detail that needs to be specified in the question.
    – glenn jackman
    Sep 12, 2018 at 15:54
  • Ok, but actually, that line just does not produce an output. That was the issue.
    – mario
    Sep 12, 2018 at 16:22

2 Answers 2

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Just add a backslash before the backtick:

grep -Rl "'30" /myDir | xargs  sed  "s/'30/\`30/g"
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  • 1
    the OP had sed -i...
    – Jeff Schaller ♦
    Sep 12, 2018 at 15:18
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find /myDir -maxdepth 1 -type f -exec grep -q \'30 {} \; -exec sed -i -e y/\'/\`/ {} +

Here you allow find to filter the files, in the directory /myDir, carrying the string ,'30, and pass only those, in a bunch, to sed, which'll do an in-place editing-i` on them.

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