[![Actions Status](https://github.com/kaz-utashiro/greple-update/workflows/test/badge.svg)](https://github.com/kaz-utashiro/greple-update/actions) [![MetaCPAN Release](https://badge.fury.io/pl/App-Greple-update.svg)](https://metacpan.org/release/App-Greple-update)
# NAME

update - Greple module to update files

# SYNOPSIS

greple -Mupdate

Options:

    --update
    --with-backup

    --diff
    --diffcmd command

# VERSION

Version 0.01

# DESCRIPTION

This **greple** module substitute the target file contents by command
output.  For example, next command replace all words in the file to
uppercase.

    greple -Mupdate '\w+' --cm 'sub{uc}' --update file

Above is a very simple example but you can implement arbitrarily
complex convert function in conjunction with other various **greple**
options.

You can check how the file will be edited by **--diff** option.

    greple -Mupdate '\w+' --cm 'sub{uc}' --diff file

Command **sdif** or **cdif** is should be useful to see the difference
visually.

    greple -Mupdate '\w+' --cm 'sub{uc}' --diff file | cdif

This module has spun off from [App::Greple::subst](https://metacpan.org/pod/App%3A%3AGreple%3A%3Asubst) module.  Consult
it for more practical use case.

# OPTIONS

- **--update**

    Update the target file by command output.  Without this option,
    **greple** behaves as normal operation, that means only matched lines
    are printed.

- **--with-backup**\[=_suffix_\]

    Backup original file with ".bak" suffix.  If optional parameter is
    given, it is used as a suffix string.

- **--diff**

    Option **-diff** produce diff output of original and converted text.

# INSTALL

## CPANMINUS

    $ cpanm App::Greple::update

## GITHUB

    $ cpanm https://github.com/kaz-utashiro/greple-update.git

# SEE ALSO

[https://github.com/kaz-utashiro/greple-update](https://github.com/kaz-utashiro/greple-update)

[https://github.com/kaz-utashiro/greple](https://github.com/kaz-utashiro/greple)

[https://github.com/kaz-utashiro/greple-subst](https://github.com/kaz-utashiro/greple-subst)

# AUTHOR

Kazumasa Utashiro

# LICENSE

Copyright 2022 Kazumasa Utashiro.

This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.