Set Linux time / date

Have noticed that virtual machines may not have the same time as host.

So, some systems like OpenVAS may not allow logons.

to set the time use

# date +%T -s "10:13:13"

or for time and date

sudo date newdatetimestring

where newdatetimestring has to follow the format nnddhhmmyyyy.ss which is described below

• nn is a two digit month, between 01 to 12
• dd is a two digit day, between 01 and 31, with the regular rules for days according to month and year applying
• hh is two digit hour, using the 24-hour period so it is between 00 and 23
• mm is two digit minute, between 00 and 59
• yyyy is the year; it can be two digit or four digit: your choice. I prefer to use four digit years whenever I can for better clarity and less confusion
• ss is two digit seconds. Notice the period ‘.’ before the ss.

Let’s say you want to set your computer’s new time to December 6, 2007, 22:43:55, then you would use:

sudo date 120622432007.55

date mmddhhmmyyy




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Thanks to
http://lists.wald.intevation.org/pipermail/openvas-discuss/2011-June/003128.html
http://www.cyberciti.biz/faq/howto-set-date-time-from-linux-command-prompt/
http://codeghar.wordpress.com/2007/12/06/manage-time-in-ubuntu-through-command-line/