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add more examples to tr 

These examples were suggested to add and are based from the tr-wikipedia article at https://en.wikipedia.org/w/index.php?title=Tr_(Unix)&oldid=631477596
waldyrious/alt-syntax
Daniel Senff 2015-03-14 12:05:19 +01:00
parent c86216e261
commit 70017a6200
1 changed files with 17 additions and 5 deletions
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# tr
> translate characters - run replacements based on single characters
> translate characters - run replacements based on single characters and character sets
- replace all occurrences of a character in a file, and print the result
- Replace all occurrences of a character in a file, and prints the result
`tr {{find_character}} {{replace_character}} < {{filename}}`
`tr {{find_characters}} {{replace_characters}} < {{filename}}`
Translate the contents of the file to upper-case, prints result.
- Maps each character of the first set to the corresponding character of the second set.
`tr 'abcd' 'jkmn' < {{filename}}`
- Delete all occurances of the specified set of characters from the input.
`tr -d '{{input_characters}}'`
- Compresses a series of identical characters to a single character.
`tr -s '\n'`
- Translate the contents of the file to upper-case, prints result.
`tr "[:lower:]" "[:upper:]" < {{filename}}`
Strip out non-printable characters from the file, prints result.
- Strip out non-printable characters from the file, prints result.
`tr -cd "[:print:]" < {{filename}}`