1TR(1)                            User Commands                           TR(1)
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NAME

6       tr - translate or delete characters
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SYNOPSIS

9       tr [OPTION]... SET1 [SET2]
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DESCRIPTION

12       Translate, squeeze, and/or delete characters from standard input, writ‐
13       ing to standard output.
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15       -c, -C, --complement
16              use the complement of SET1
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18       -d, --delete
19              delete characters in SET1, do not translate
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21       -s, --squeeze-repeats
22              replace each sequence of a repeated character that is listed  in
23              the last specified SET, with a single occurrence of that charac‐
24              ter
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26       -t, --truncate-set1
27              first truncate SET1 to length of SET2
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29       --help display this help and exit
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31       --version
32              output version information and exit
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34       SETs are specified as strings  of  characters.   Most  represent  them‐
35       selves.  Interpreted sequences are:
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37       \NNN   character with octal value NNN (1 to 3 octal digits)
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39       \\     backslash
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41       \a     audible BEL
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43       \b     backspace
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45       \f     form feed
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47       \n     new line
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49       \r     return
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51       \t     horizontal tab
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53       \v     vertical tab
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55       CHAR1-CHAR2
56              all characters from CHAR1 to CHAR2 in ascending order
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58       [CHAR*]
59              in SET2, copies of CHAR until length of SET1
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61       [CHAR*REPEAT]
62              REPEAT copies of CHAR, REPEAT octal if starting with 0
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64       [:alnum:]
65              all letters and digits
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67       [:alpha:]
68              all letters
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70       [:blank:]
71              all horizontal whitespace
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73       [:cntrl:]
74              all control characters
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76       [:digit:]
77              all digits
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79       [:graph:]
80              all printable characters, not including space
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82       [:lower:]
83              all lower case letters
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85       [:print:]
86              all printable characters, including space
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88       [:punct:]
89              all punctuation characters
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91       [:space:]
92              all horizontal or vertical whitespace
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94       [:upper:]
95              all upper case letters
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97       [:xdigit:]
98              all hexadecimal digits
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100       [=CHAR=]
101              all characters which are equivalent to CHAR
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103       Translation  occurs  if  -d is not given and both SET1 and SET2 appear.
104       -t may be used only when translating.  SET2 is extended  to  length  of
105       SET1  by  repeating its last character as necessary.  Excess characters
106       of SET2 are ignored.  Only [:lower:] and [:upper:]  are  guaranteed  to
107       expand  in  ascending  order;  used in SET2 while translating, they may
108       only be used in pairs to specify case conversion.   -s  uses  the  last
109       specified SET, and occurs after translation or deletion.
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AUTHOR

112       Written by Jim Meyering.
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REPORTING BUGS

115       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
116       Report any translation bugs to <https://translationproject.org/team/>
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119       Copyright  ©  2020  Free Software Foundation, Inc.  License GPLv3+: GNU
120       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
121       This is free software: you are free  to  change  and  redistribute  it.
122       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

125       Full documentation <https://www.gnu.org/software/coreutils/tr>
126       or available locally via: info '(coreutils) tr invocation'
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130GNU coreutils 8.32               February 2021                           TR(1)
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