NAME¶

tr - Translate or delete characters

SYNOPSIS¶

tr [-c|--complement] [-d|--delete] [-s|--squeeze-repeats] [-t|--truncate-set1] [-h|--help] [-V|--version] [sets]

DESCRIPTION¶

Translate or delete characters

OPTIONS¶

-c, --complement

use the complement of SET1

-d, --delete

delete characters in SET1, do not translate

-s, --squeeze-repeats

replace each sequence of a repeated character that is listed in the last specified SET, with a single occurrence of that character

-t, --truncate-set1

first truncate SET1 to length of SET2

-h, --help

Print help

-V, --version

Print version

[sets]

EXTRA¶

Translate, squeeze, and/or delete characters from standard input, writing to standard output.

VERSION¶

v(uutils coreutils) 0.9.0

EXAMPLES¶

Replace all occurrences of a character in a file, and print the result:

tr < path/to/file find_character replace_character

Replace all occurrences of a character from another command's output:

echo text | tr find_character replace_character

Map each character of the first set to the corresponding character of the second set:

tr < path/to/file 'abcd' 'jkmn'

Delete all occurrences of the specified set of characters from the input:

tr < path/to/file [-d|--delete] 'input_characters'

Compress a series of identical characters to a single character:

tr < path/to/file [-s|--squeeze-repeats] 'input_characters'

Translate the contents of a file to upper-case:

tr < path/to/file "[:lower:]" "[:upper:]"

Strip out non-printable characters from a file:

tr < path/to/file [-cd|--complement --delete] "[:print:]"

The examples are provided by the tldr-pages project <https://tldr.sh> under the CC BY 4.0 License. Please note that, as uutils is a work in progress, some examples might fail.