Rssowl news filters syntax12/13/2023 Using negation can be useful if you would like to do some generic ForĮxample, if msg contains “This is an informative message”, the following You can use the bang-character (!) immediately in front of aĬompare-operation, the outcome of this operation is negated. ereregex Compares the property against the provided POSIX ERE regular expression. regex Compares the property against the provided POSIX BRE regular expression. Implemented, it can make very much sense (performance-wise) to use Please note that “startswith” isīy far faster than regular expressions. Won’t match if the msg contains “There are values in this message” (in It will be a match if msg contains “values are in this message” but it For example, if you search for “val” with Is most useful for fields like syslogtag or FROMHOST, where you probablyĬhecks if the value is found exactly at the beginning of the property Whereas all characters must be identical for isequal. That contains searches for the value anywhere inside the property value, Two values must be exactly equal to match. isequal Compares the “value” string provided and the property contents. There must be an exact match, wildcards are not supported. The following compare-operations are currently supported: contains Checks if the string provided in value is contained in the property. If you use both extensions than theĮxclamation mark must occur before the equals sign, just use it You may also (both is valid, too) precede the priority with anĮxclamation mark (”!’‘) to ignore all that priorities, either exact this Sign (“=’‘) to specify only this single priority and not any of theĪbove. You may precede every priority with an equals Rsyslogd has a syntax extension to the original BSD source, that makes You can exclude some priorities from the pattern. Remember that each selector in the selectorįield is capable to overwrite the preceding ones. Multiple selectors may be specified for a single action using the Statement is taken, a priority part would be skipped. Remember that only the facility part from such a You may specify as muchįacilities as you want. One statement using the comma (”,’‘) operator. You can specify multiple facilities with the same priority pattern in The keyword none stands for no priority of the given facility. Or all priorities, depending on where it is used (before or after the The following extensions: An asterisk (“*’‘) stands for all facilities In addition to the above mentioned names the rsyslogd(8) understands Rsyslogd behaves the same, but has some extensions. Specified priority and higher are logged according to the given action. The behavior of the original BSD syslogd is that all messages of the Priority defines the severity of the message. Warn and panic are deprecated and should not be used anymore. The priority is one of the following keywords, in ascending order:ĭebug, info, notice, warning, warn (same as warning), err, error (sameĪs err), crit, alert, emerg, panic (same as emerg). all mail programs log with the mail facility The facility specifies the subsystem that produced Anyway, you may want to specify and redirect Used anymore and mark is only for internal use and therefore should notīe used in applications. The facility is one of the following keywords: auth, authpriv, cron,ĭaemon, kern, lpr, mail, mark, news, security (same as auth), syslog, The names mentioned below correspond to the similar Both facilities and priorities are described in Both parts are case insensitiveĪnd can also be specified as decimal numbers, but don’t do that, you The selector field itself again consists of two parts, a facility and a Not second-class citizens in rsyslog and offer the best performance Priority and facility, you should do this with selector lines. Well-known, highly effective and also needed for compatibility with Have been kept in rsyslog with their original syntax, because it is Selectors are the traditional way of filtering syslog messages.
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