Bash History: Display Date And Time For Each Command

Bash History: Display Date And Time For Each Command

How do I display shell command history with date and time under UNIX or Linux operating systems?

If the HISTTIMEFORMAT is set, the time stamp information associated with each history entry is written to the history file, marked with the history comment character. Defining the environment variable as follows:
$ HISTTIMEFORMAT="%d/%m/%y %T "
OR
$ echo 'export HISTTIMEFORMAT="%d/%m/%y %T "' >> ~/.bash_profile
Where,
%d - Day
%m - Month
%y - Year
%T - Time
To see history type
$ history
Sample outputs:

....
..
986 11/03/10 04:31:36 memcached-tool 10.10.28.22:11211 stats
987 11/03/10 04:31:36 w
988 11/03/10 04:31:37 iostat
989 11/03/10 04:31:37 top
990 11/03/10 04:31:37 at
991 11/03/10 04:31:38 atop
992 11/03/10 04:31:40 collectl
993 11/03/10 04:31:41 grep CPU /proc/cpuinfo
994 11/03/10 04:31:45 vmstat 3 100
995 11/03/10 04:31:55 sar -W -f /var/log/sa/sa12
....
..

References:

For more info type the following commands:
man bash
help history
man 3 strftime