persist-tool(1)

PERSIST-TOOL(1) The persist-tool tool manual p PERSIST-TOOL(1)

NAME
persist-tool - Display the content of the persist file

SYNOPSIS
persist-tool [command] [options]

DESCRIPTION
NOTE: The persist-tool application is distributed with the syslog-ng
system logging application, and is usually part of the syslog-ng
package. The latest version of the syslog-ng application is available
at the official syslog-ng website[1].

This manual page is only an abstract, for the complete documentation of
syslog-ng, see the The syslog-ng Administrator Guide[2].

The persist-tool application is a utility that can be used to dump the
content of the persist file, and manipulate its content.

Warning
Persist-tool is a special tool for syslog-ng experts. Do use the
tool unless you know exactly what you are doing. Misconfiguring it
will result in irrecoverable damage to the persist file, without
any warning.

Note
Limitations:

o The persist-state functions can be used only with syslog-ng PE
5 LTS style persist file (SLP4). Older persist files are not
supported.

o Wildcard characters are not supported in file/directory names.

THE DUMP COMMAND
dump [options] [persist_file]

Use the dump command to print the current content of the persist file
in JSON format to the console.

The dump command has the following options:

--help or -?
Display a brief help message.

Example:

persist-tool dump /usr/var/syslog-ng.persist

The output looks like:

run_id = { "value": "00 00 00 00 0C 00 00 00 " }
host_id = { "value": "00 00 00 00 5F 49 2F 01 " }

THE ADD COMMAND
add [options] [input_file]

Use the add command to add or modify a specified state-entry in the
persist file. The state-entry should be in the same format as the dump
command displays it. If the given state-entry already exists, it will
be updated. Otherwise, a new value will be added. If the given persist
state is invalid, it will be skipped.

To use the add command: use persist-tool dump to print the content of
the current persist file, and redirect it to a file. Edit the content
of this file. Use persist-tool add with this file to modify the
persist.

The add command has the following options:

--help or -?
Display a brief help message.

--output-dir=<directory> or -o
Required parameter. The directory where the persist file is located
at. The name of the persist file stored in this directory must be
syslog-ng.persist.

Example:

/usr/bin/persist-tool add dump_persist -o .

The valid output looks like:

log_reader_curpos(Application) OK
affile_sd_curpos(/var/aaa.txt) OK

The invalid output looks like:

log_reader_curpos(Application) OK
wrong
FAILED (error: Invalid entry syntax)
affile_sd_curpos(/var/aaa.txt) OK

FILES
/usr/bin/persist-tool