设置方法：
#export HISTTIMEFORMAT="`whoami` | %F %T | "
#echo ‘export HISTTIMEFORMAT="`whoami` | %F %T | "‘ >> /etc/profile
#. /etc/profile
效果如下：
# history
......
1047 root | 2015-08-14 17:38:54 | ulimit -a
1048 root | 2015-08-14 17:45:09 | cd
1049 root | 2015-08-14 17:45:11 | history
1050 root | 2015-08-14 17:45:41 | ansible Player -m ping
1051 root | 2015-08-14 17:48:59 | ansible Player -m shell -a "ifconfig eth0"
1052 root | 2015-08-14 17:49:25 | ansible Player -a "ntpdate ntp.api.bz"
1053 root | 2015-08-14 17:49:39 | history
原文：http://relearn.blog.51cto.com/2605709/1684748