mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-27 03:13:37 +08:00
67 lines
1.8 KiB
ReStructuredText
67 lines
1.8 KiB
ReStructuredText
string-replace - replace substrings
|
|
===================================
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
.. BEGIN SYNOPSIS
|
|
|
|
::
|
|
|
|
string replace [(-a | --all)] [(-f | --filter)] [(-i | --ignore-case)] [(-r | --regex)] [(-q | --quiet)] PATTERN REPLACEMENT [STRING...]
|
|
|
|
.. END SYNOPSIS
|
|
|
|
Description
|
|
-----------
|
|
|
|
.. BEGIN DESCRIPTION
|
|
|
|
``string replace`` is similar to ``string match`` but replaces non-overlapping matching substrings with a replacement string and prints the result. By default, PATTERN is treated as a literal substring to be matched.
|
|
|
|
If ``-r`` or ``--regex`` is given, PATTERN is interpreted as a Perl-compatible regular expression, and REPLACEMENT can contain C-style escape sequences like ``\t`` as well as references to capturing groups by number or name as ``$n`` or ``${n}``.
|
|
|
|
If you specify the ``-f`` or ``--filter`` flag then each input string is printed only if a replacement was done. This is useful where you would otherwise use this idiom: ``a_cmd | string match pattern | string replace pattern new_pattern``. You can instead just write ``a_cmd | string replace --filter pattern new_pattern``.
|
|
|
|
Exit status: 0 if at least one replacement was performed, or 1 otherwise.
|
|
|
|
.. END DESCRIPTION
|
|
|
|
Examples
|
|
--------
|
|
|
|
.. BEGIN EXAMPLES
|
|
|
|
Replace Literal Examples
|
|
^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
::
|
|
|
|
>_ string replace is was 'blue is my favorite'
|
|
blue was my favorite
|
|
|
|
>_ string replace 3rd last 1st 2nd 3rd
|
|
1st
|
|
2nd
|
|
last
|
|
|
|
>_ string replace -a ' ' _ 'spaces to underscores'
|
|
spaces_to_underscores
|
|
|
|
Replace Regex Examples
|
|
^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
::
|
|
|
|
>_ string replace -r -a '[^\\d.]+' ' ' '0 one two 3.14 four 5x'
|
|
0 3.14 5
|
|
|
|
>_ string replace -r '(\\w+)\\s+(\\w+)' '$2 $1 $$' 'left right'
|
|
right left $
|
|
|
|
>_ string replace -r '\\s*newline\\s*' '\\n' 'put a newline here'
|
|
put a
|
|
here
|
|
|
|
.. END EXAMPLES
|