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Home/ Questions/Q 1090695
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Editorial Team
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Editorial Team
Asked: May 16, 20262026-05-16T23:24:42+00:00 2026-05-16T23:24:42+00:00

I need to convert all text to lowercase, but not using the traditional tr

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I need to convert all text to lowercase, but not using the traditional “tr” command because it does not handle UTF-8 languages properly.

Is there a nice way to do that? I need some UNIX filter so I can process this in a pipe.

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  1. Editorial Team
    Editorial Team
    2026-05-16T23:24:43+00:00Added an answer on May 16, 2026 at 11:24 pm

    Gnu sed should be able to handle unicode. Try

    $ echo 'Some StrAngÉ LeTTeRs 123' | sed -e 's/./\L\0/g'
    some strangé letters 123
    
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