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tr
: Translate, squeeze, and/or delete characters Synopsis:
tr [option]... set1 [set2] |
tr
copies standard input to standard output, performing
one of the following operations:
The set1 and (if given) set2 arguments define ordered
sets of characters, referred to below as set1 and set2. These
sets are the characters of the input that tr
operates on.
The `--complement' (`-c') option replaces set1 with its
complement (all of the characters that are not in set1).
9.1.1 Specifying sets of characters 9.1.2 Translating Changing one characters to another. 9.1.3 Squeezing repeats and deleting 9.1.4 Warning messages