(coreutils.info.gz) Setting the time

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(coreutils.info.gz) Padding and other flags

(coreutils.info.gz) date invocation

(coreutils.info.gz) Options for date

 
 21.1.5 Setting the time
 -----------------------
 
 If given an argument that does not start with '+', 'date' sets the
 system clock to the date and time specified by that argument (as
 described below).  You must have appropriate privileges to set the
 system clock.  Note for changes to persist across a reboot, the hardware
 clock may need to be updated from the system clock, which might not
 happen automatically on your system.
 
    The argument must consist entirely of digits, which have the
 following meaning:
 
 'MM'
      month
 'DD'
      day within month
 'hh'
      hour
 'mm'
      minute
 'CC'
      first two digits of year (optional)
 'YY'
      last two digits of year (optional)
 'ss'
      second (optional)
 
    Note, the '--date' and '--set' options may not be used with an
 argument in the above format.  The '--universal' option may be used with
 such an argument to indicate that the specified date and time are
 relative to Coordinated Universal Time rather than to the local time
 zone.
 

Info Catalog

(coreutils.info.gz) Padding and other flags

(coreutils.info.gz) date invocation

(coreutils.info.gz) Options for date