Linux tr command (translate)
The tr command is used to translate text.
Example
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root@ok:~# echo "serverok" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ SERVEROK root@ok:~# |
You can also use
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root@ok:~# echo "serverok" | tr "a-z" "A-Z" SERVEROK root@ok:~# |
To change specific chars
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root@ok:~# echo "serverok" | tr "sok" "SOK" ServerOK root@ok:~# |
To delete char, use -d option
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root@ok:~# echo "serverok" | tr -d "ok" server root@ok:~# |
See Linux Commands