TR(1) | User Commands | TR(1) |
tr - translate or delete characters
tr [OPTION]... SET1 [SET2]
Translate, squeeze, and/or delete characters from standard input, writing to standard output.
SETs are specified as strings of characters. Most represent themselves. Interpreted sequences are:
Translation occurs if -d is not given and both SET1 and SET2 appear. -t may be used only when translating. SET2 is extended to length of SET1 by repeating its last character as necessary. Excess characters of SET2 are ignored. Only [:lower:] and [:upper:] are guaranteed to expand in ascending order; used in SET2 while translating, they may only be used in pairs to specify case conversion. -s uses the last specified SET, and occurs after translation or deletion.
Written by Jim Meyering.
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report tr translation bugs to <https://translationproject.org/team/>
Copyright © 2018 Free Software Foundation, Inc. License
GPLv3+: GNU GPL version 3 or later
<https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO
WARRANTY, to the extent permitted by law.
Full documentation at:
<https://www.gnu.org/software/coreutils/tr>
or available locally via: info '(coreutils) tr invocation'
February 2019 | GNU coreutils 8.30 |