Please identify a location so that time zone rules can be set correctly.ġ1) none - I want to specify the time zone using the Posix TZ format.ġ) Anguilla 19) Dominican Republic 37) PeruĢ) Antigua & Barbuda 20) Ecuador 38) Puerto Ricoģ) Argentina 21) El Salvador 39) St BarthelemyĤ) Aruba 22) French Guiana 40) St Kitts & NevisĦ) Barbados 24) Grenada 42) St Maarten (Dutch)ħ) Belize 25) Guadeloupe 43) St Martin (French)Ĩ) Bolivia 26) Guatemala 44) St Pierre & Miquelonġ1) Caribbean NL 29) Honduras 47) Trinidad & Tobagoġ2) Cayman Islands 30) Jamaica 48) Turks & Caicos Isġ3) Chile 31) Martinique 49) United Statesġ5) Costa Rica 33) Montserrat 51) Venezuelaġ6) Cuba 34) Nicaragua 52) Virgin Islands (UK)ġ7) Curacao 35) Panama 53) Virgin Islands (US) Here’s a typescript of the command output to set TZ ~]$ tzselect My shell process (running the date command) and my Cache’ process show the same time, except for a few seconds that I needed to type the WRITE command. Here’s a snippet from my Terminal session: The key ideas here are that the system timezone is set for the server’s timezone and that the hardware clock time is set correctly. Since dual-boot configurations aren’t common for Cache’ and Ensemble installations, I won’t say more about this.
When Linux is used in a dual-boot configuration with Windows, this is not the case (Windows uses local time for its system clock). On a dedicated server, UTC is very common. What about “System clock uses UTC”? This refers to the server’s hardware clock. The system-config-date utility can show you. So how do you set TZ? How does it affect the time on a Linux server? Let’s see what we can learn: The System Timezone -įor my test, I’m using Ensemble 2016.1 on a virtual CentOS system. This function is automatically called by the other time conversion functions that depend on the timezone.” “The tzset() function initializes the tzname variable from the TZ environment variable. The manpage on my CentOS 7 test system (RHEL 6 says the same) has this to say: This is recommended to improve the performance of Cache’s time-related functions. The Update Checklist for v2015.1 recommends setting the TZ environment variable on Linux platforms and points to the manpage for tzset. Setting the TZ Environment Variable on Linux
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