rsyslogd and characters #012 and #015

Question

I use rsyslogd version 5.8. The characters 
 and  are dumped as #012 and #015 in the log file. Example (by entering command: printf "example-test[]" | logger) : ``` <13> 2014-07-07T11:01:03.254 root: example-test[#015] ``` I would rather like to dump them in hexadecimal: #0A and #0D (or other more human-readable format). How could I do this by modifying the rsyslogd configuration file?

Accepted Answer

After reading the source code of rsyslogd versions 5.8.3 and 7.6.0, it appears that :

- the hexadecimal base cannot be used, as the octal base (#012, #015) is hard-coded.

- the escaping can be turned on or off: parameters $EscapeControlCharactersOnReceive and $Escape8BitCharactersOnReceive

The documentation confirms that:

https://www.rsyslog.com/doc/v7-stable/configuration/input_directives/rsconf1_escapecontrolcharactersonreceive.html

https://www.rsyslog.com/doc/v7-stable/configuration/input_directives/rsconf1_escape8bitcharsonreceive.html

rsyslogd and characters #012 and #015

Solution

Problem