From 70017a62004c2c2440bda4f209e43e6ac23d6628 Mon Sep 17 00:00:00 2001 From: Daniel Senff Date: Sat, 14 Mar 2015 12:05:19 +0100 Subject: [PATCH] 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 --- pages/common/tr.md | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/pages/common/tr.md b/pages/common/tr.md index 423d1ba65..0a1a3fba1 100644 --- a/pages/common/tr.md +++ b/pages/common/tr.md @@ -1,15 +1,27 @@ # 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}}`