Linux Command - Tr | Xing's Blog

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tr - Translate characters.

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

Syntax

1	tr [OPTIONS] SET1 [SET2]

Options

Common Option	Description
-c	use the complement of SET1
-d	delete characters in the first set
-s	replace each input sequence of a repeated character that is listed in SET1 with a single occurrence of that character
-t	first truncate SET1 to length of SET2

Examples

Replace characters

1	tr 'abc' 'DEF' < file1

Here we replace ‘a’ with ‘D’, ‘b’ with ‘E’ and ‘c’ with ‘F’.

1	tr -d 'ac' < file1

Remove character ‘a’ and ‘c’

1	tr -s '[:blank:]' < file1

Blanks will be compressed. e.g. ‘ab cd’ will become ‘ab cd’

1	tr '[:lower:]' '[:upper:]' < file1

Reference

Từ khóa » Xing Tr