1TS2ALT(8) System Manager's Manual TS2ALT(8)
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6 tz2alt - Monitors daylight savings time changes and publishes them to
7 PTP stack.
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11 ts2alt [ -hmqv ] [ -f conf ] [ -k key ] [ -p period ] [ -w window ] [
12 -z timezone ] [ long-options ] ...
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16 tz2alt leverages the local time zone database to monitor for changes in
17 daylight savings time and publishes the pending changes to the PTP
18 stack.
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22 -f config
23 Read configuration from the specified file. No configuration
24 file is read by default.
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26 -h Displays the command line help summary.
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28 -l print-level
29 Sets the maximum syslog level of messages which should be
30 printed or sent to the system logger. The default is 6
31 (LOG_INFO).
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33 -m Prints log messages to the standard output.
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35 -q Prevents sending log messages to the system logger.
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37 -v Prints the software version and exits.
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41 Each and every configuration file option (see below) may also appear as
42 a "long" style command line argument. For example, the use_syslog op‐
43 tion may be set using either of these two forms.
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45 --use_syslog 1 --use_syslog=1
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47 Option values given on the command line override values in the global
48 section of the configuration file.
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52 The configuration file is divided into sections. Each section starts
53 with a line containing its name enclosed in brackets and it follows
54 with settings. Each setting is placed on a separate line, it contains
55 the name of the option and the value separated by whitespace charac‐
56 ters. Empty lines and lines starting with # are ignored.
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60 domainNumber
61 The domain attribute of the local clock. The default is 0.
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64 leapfile
65 The path to the current leap seconds definition file. In a De‐
66 bian system this file is provided by the tzdata package and can
67 be found at /usr/share/zoneinfo/leap-seconds.list. If a leapfile
68 is configured it will be reloaded if modified. The default is an
69 empty string, which causes the program to use a hard coded table
70 that reflects the known leap seconds on the date of the soft‐
71 ware's release.
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74 logging_level
75 The maximum logging level of messages which should be printed.
76 The default is 6 (LOG_INFO).
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79 message_tag
80 The tag which is added to all messages printed to the standard
81 output or system log. The default is an empty string (which
82 cannot be set in the configuration file as the option requires
83 an argument).
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86 transportSpecific
87 The transport specific field. Must be in the range 0 to 255.
88 The default is 0.
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91 use_syslog
92 Print messages to the system log if enabled. The default is 1
93 (enabled).
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96 verbose
97 Print messages to the standard output if enabled. The default
98 is 0 (disabled).
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102 Be cautious when sharing the same configuration file between ptp4l,
103 phc2sys, and tz2alt. Keep in mind that values specified in the config‐
104 uration file take precedence over the default values. If an option
105 which is common to the other programs is set in the configuration file,
106 then the value will be applied to all the programs using the file, and
107 this might not be what is expected.
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109 It is recommended to use separate configuration files for ptp4l,
110 phc2sys, and tz2alt in order to avoid any unexpected behavior.
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114 ptp4l(8)
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118linuxptp February 2023 TS2ALT(8)