If my Unix machine is set to IST timezone, how can I get the current GMT time?
如果我的Unix机器设置为IST时区，我怎样才能获得当前的GMT时间？
4 个解决方案
#1
38
You can use the -u option of date command:
您可以使用date命令的-u选项：
date -u
-u Display (or set) the date in Greenwich Mean Time (GMT-universal time), bypassing the normal conversion to (or from) local time.
-u以格林威治标准时间（GMT-通用时间）显示（或设置）日期，绕过正常转换为（或从当地时间）。
#2
22
Try doing this with date shell command :
尝试使用date shell命令执行此操作：
date -u
#3
3
If you're doing this from a shell script, you can use date -u, which gives you UTC.
如果您是从shell脚本执行此操作，则可以使用date -u，它为您提供UTC。
From C, you would use time() in conjunction with gmtime() to give yourself a struct tm with the required data (gmtime() gives UTC, unlike localtime()).
从C开始，您可以将time（）与gmtime（）结合使用，为自己提供一个包含所需数据的struct tm（gmtime（）给出UTC，与localtime（）不同）。
#4
2
In command line, you can set a timezone to the one you would like to see, and check the time with date command, before returning to the original one.
在命令行中，您可以将时区设置为您想要查看的时区，并在返回原始时间之前使用date命令检查时间。
#see current timezone
(date +%Z)
#change to a desired ie. London
export TZ=England/London
#or LA would be
export TZ=America/Los_Angeles
#check the time
date
Also of course, as suggested, to see just universal time, you can use the one suggested before
当然，正如建议的那样，只要看一下普遍时间，就可以使用之前建议的那个
#1
38
You can use the -u option of date command:
您可以使用date命令的-u选项：
date -u
-u Display (or set) the date in Greenwich Mean Time (GMT-universal time), bypassing the normal conversion to (or from) local time.
-u以格林威治标准时间（GMT-通用时间）显示（或设置）日期，绕过正常转换为（或从当地时间）。
#2
22
Try doing this with date shell command :
尝试使用date shell命令执行此操作：
date -u
#3
3
If you're doing this from a shell script, you can use date -u, which gives you UTC.
如果您是从shell脚本执行此操作，则可以使用date -u，它为您提供UTC。
From C, you would use time() in conjunction with gmtime() to give yourself a struct tm with the required data (gmtime() gives UTC, unlike localtime()).
从C开始，您可以将time（）与gmtime（）结合使用，为自己提供一个包含所需数据的struct tm（gmtime（）给出UTC，与localtime（）不同）。
#4
2
In command line, you can set a timezone to the one you would like to see, and check the time with date command, before returning to the original one.
在命令行中，您可以将时区设置为您想要查看的时区，并在返回原始时间之前使用date命令检查时间。
#see current timezone
(date +%Z)
#change to a desired ie. London
export TZ=England/London
#or LA would be
export TZ=America/Los_Angeles
#check the time
date
Also of course, as suggested, to see just universal time, you can use the one suggested before
当然，正如建议的那样，只要看一下普遍时间，就可以使用之前建议的那个