Resolving the CentOS 7 history command does not show the time and user identity issues of the operation record

CENTOS6 The history command displays the time and user identity of the action command

[Email protected] ~]# history 294 2017-01-06 16:46:48 root Clear 295 2017-01-06 16:46:50 Root ll 296 2017-01-06 1  6:46:52 root cat hostname.sh 297 2017-01-06 16:46:56 root cat nginxlog_cut.sh 298 2017-01-06 16:47:29 Root Clear 299 2017-01-06 16:47:34 Root history[[email protected] ~]# cat/etc/redhat-release CentOS release 6.6 (Final) [[Email PR Otected] ~]#

In Centos7, the time and user identity of the action command is not displayed in the history command

[Email protected] data]# cat/etc/redhat-release CentOS Linux release 7.2.1511 (Core) [[email protected] data]# history- n 10[[email protected] data]# 1268 1269 History 1270 Cat/etc/redhat-release 1271 clear 1272 Cat/etc/re Dhat-release 1273 History 1274 Clear 1275 Cat/etc/redhat-release 1276 history-n Ten 1277 history 10[[email protect Ed] data]#

To solve this problem, you only need to add the following variables to the/etc/profile:

Export histtimeformat= "%y-%m-%d%h:%m:%s ' WhoAmI '"

and then run the source/etc/profile command, notice the spaces in the quotation marks

[[email protected] data]# history 10 1273   2017-01-05 19:40:18  root history 1274  2017-01-05 19:40:27   root clear 1275  2017-01-05 19:40:29  root cat /etc/ redhat-release  1276  2017-01-05 19:40:35  root history -n  10 1277  2017-01-05 19:40:39  root history 10 1278   2017-01-05 19:41:12  root cat /etc/profile 1279  2017-01-05  19:42:16  root vim  /etc/profile 1280  2017-01-05 19:42:26   root source  /etc/profile 1281  2017-01-05 19:42:28  root  history 1282  2017-01-05 19:42:42  root history 10[[email  protected] data]# 

At this time the history command output format is perfectly resolved, if you want to clear historical records, you can use History-c, the following:

Usage and parameters of the history command Usage:history [-c] [-D offset] [n] or HISTORY-ANRW [filename] or history-ps arg [arg ...]

Parameters:

N: number, to list the most recent command lists

-C: Eliminate all history content in the current shell

-A: Add the current New History command to Histfiles, and if there is no histfiles, the default write ~/.bash_history

-r: Read Histfiles's contents into the current Shell's history memory

-W: Writes current history memory content to Histfiles

This article from "Flat Light is true" blog, please be sure to keep this source http://ucode.blog.51cto.com/10837891/1889568

Resolving the CentOS 7 history command does not show the time and user identity issues of the operation record