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Bug in Gnu date?

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Top Forums Shell Programming and Scripting Bug in Gnu date?
# 8  
Old 10-31-2018
Your timezone is not determined by your locale setting. What does the following command output:
echo $TZ

# 9  
Old 11-01-2018
Originally Posted by Don Cragun
Your timezone is not determined by your locale setting. What does the following command output:
echo $TZ

It's not set. However the file /etc/timezone contains the string Europe/London; the file /usr/share/zoneinfo/Europe/London links to ../GB, ie /usr/share/zoneinfo/GB.

Or, more succinctly, I am using the default system timezone, which was set to Europe/London when I installed this system.


Last edited by apmcd47; 11-01-2018 at 10:53 AM..
# 10  
Old 11-05-2018
I've found this message in the bug-coreutils list. It turns out that date is parsing the + 1 as offset from UTC. This can be seen if I use different numbers in my date invocation:
$ date --date="15:00   + 3 minutes"
Mon  5 Nov 12:01:00 GMT 2018
$ date --date="15:00 + 2 minutes"
Mon  5 Nov 13:01:00 GMT 2018
$ date --date="15:00 + 1 minute"
Mon  5 Nov 14:01:00 GMT 2018
$ date --date="15:00 - 1 minute"
Mon  5 Nov 16:01:00 GMT 2018
$ date --date="15:00 - 2 minutes"
Mon  5 Nov 17:01:00 GMT 2018
$ date --date="15:00 - 3 minutes"
Mon  5 Nov 18:01:00 GMT 2018

Notice how the minute field stays at 01 rather than being incremented (decremented) by the value I specified.
Now, counter-intuitively, I can place the + 1 minute anywhere in the date definition, so
$ date --date="+ 1 minute 15:00"
Mon  5 Nov 15:01:00 GMT 2018
$ date --date="+ 5 minutes 15:00"
Mon  5 Nov 15:05:00 GMT 2018

works as I wanted it to.

So, it is a (known) bug; it is not the bug I thought it was.

Time to mark as solved.

These 2 Users Gave Thanks to apmcd47 For This Post:
# 11  
Old 11-05-2018
Nice sleuthing, I can confirm this is still occurring in version 8.29.

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