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38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# tr
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> Translate characters: run replacements based on single characters and character sets.
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> More information: <https://www.gnu.org/software/coreutils/manual/html_node/tr-invocation.html>.
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- Replace all occurrences of a character in a file, and print the result:
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`tr {{find_character}} {{replace_character}} < {{path/to/file}}`
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- Replace all occurrences of a character from another command's output:
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`echo {{text}} | tr {{find_character}} {{replace_character}}`
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- Map each character of the first set to the corresponding character of the second set:
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`tr '{{abcd}}' '{{jkmn}}' < {{path/to/file}}`
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- Delete all occurrences of the specified set of characters from the input:
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`tr {{[-d|--delete]}} '{{input_characters}}' < {{path/to/file}}`
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- Compress a series of identical characters to a single character:
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`tr {{[-s|--squeeze-repeats]}} '{{input_characters}}' < {{path/to/file}}`
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- Translate the contents of a file to upper-case:
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`tr "[:lower:]" "[:upper:]" < {{path/to/file}}`
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- Strip out non-printable characters from a file:
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`tr {{[-cd|--complement --delete]}} "[:print:]" < {{path/to/file}}`
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