# re_match()

## Purpose

re_match(expr, re)

Returns 1, if expr matches re, 0 otherwise. Uses POSIX ERE. In contrast to re_match_i() the matching is case-sensitive.

Note

Functions using regular expressions tend to be slow and other options may be faster.

## Example

In the following example it is checked if the msg object matches the regex string.

    re_match($msg,'(5[1-5][0-9]{14})')

See also

Help with configuring/using `Rsyslog`:

- Mailing list - best route for general questions

- GitHub: rsyslog source project - detailed questions, reporting issues that are believed to be bugs with `Rsyslog`

- Stack Exchange (View, Ask) - experimental support from rsyslog community

See also

Contributing to `Rsyslog`:

- Source project: rsyslog project README.

- Documentation: rsyslog-doc project README

Copyright 2008-2020 Rainer Gerhards (Großrinderfeld), and Others.