ZCS Administrator's Guide 8.0.4
ZCS Administrator's Guide 8.0.4
Open Source Edition

Appendix A Command-Line Utilities > zmtzupdate

This command is used to update time zone changes in existing appointments for specific users or all users. A .ics rule file should first be created to run with this command. A rule file lists a series of rules to match a time zone and the replacement time zone definitions. More information about this command can be found at http://wiki.zimbra.com index.php?title=Changing_ZCS_Time_Zones
zmtzupdate --rulefile <rule file> -a <“all” or list of specific email addresses> [--sync] [--after <date/time stamp>]
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