= Tr =

'''`tr(1)`''' is a character translation tool.

<<TableOfContents>>

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== Installation ==

`tr(1)` will be pre-installed on any [[Linux]] or [[BSD]] operating system, as a POSIX utility.

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== Usage ==

To force text to all-lowercase, try:

{{{
echo "Hello world" | tr '[:upper:]' '[:lower:]'
}}}

Reverse the arguments to force to all-uppercase.

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== Tips ==

If you are trying to force a file to all-lowercase (or all-uppercase) and are already using [[Vim|vim]], consider staying in the editor and using `ggVGu` (or `ggVGU`).

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== See also ==

[[https://man.archlinux.org/man/tr.1|tr(1)]]



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CategoryRicottone