I located in China, we used B2600 workstation with HP-UX10.20, which was provided by ALSTOM, germany, we found that the clock jump twice each year, because of Daylight Saving Time.
After I checked the environment viarables, the TZ was set to Middle Europe time.
Who could tell me how to disable the clock-jumping, because there is no summer time in China.
Re: How to disable timezone settings on HP-UX 10.20
It is best not to modify the tztab table. Simply change the file: /etc/TIMEZONE to read:
TZ=CHINA+8 export TZ
Or set it to the value that matches your location in China. The value +8 corresponds to Zhong Guo (Hong Kong). The TZ value is defined the man page: man environ
If you do not find your timezone in tztab, then define your own. The first word (CHINA) is anything you want to use and the + or - numbers represent the offset from UTC or Zulu time (also known as GMT). With just the name and the offset, there will be no Daylight Saving change on your machine. Note that you will have to change the system's time to match your local time *after* you make the TIMEZONE file change, and login again.
Re: How to disable timezone settings on HP-UX 10.20
>my configuration is: TZ=MET-1METDST
This gives you the time for Europe.
>Could I simply modify METDST-2 to METDST-1 to solve this question?
As Bill said, you do not modify tztab(4) except to possibly add new timezones. In your case, you don't need to add a timezone since you don't have DST.
>Bill: Or set it to the value that matches your location in China.
It seems there is only one timezone.
>the + or - numbers represent the offset from UTC
These are the numbers when added to local time give UTC. The opposite of Windows.
>you will have to change the system's time to match your local time *after* you make the TIMEZONE file change
Is this to refresh the demons' ideas of local time?
Also, if TZ=MET-1METDST, it is very likely the system UTC time is broken. What does this show? date -u It should be about 0240 on Dec 24.
