whoami,who,w命令详解
http://www.voidcn.com/blog/wszzdanm/article/p-6145895.html
命令功能:显示登录用户的信息
命令格式:
常用选项:
举例:
w 显示已经登录的用户及正在进行的操作
[root@localhost ~]# w
11:22:01 up 4 days, 21:22, 3 users, load average: 0.00, 0.00, 0.00
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty1 - Thu14 4days 0.19s 0.19s -bash
root pts/0 172.31.3.32 Thu14 0.00s 0.73s 0.00s w
root pts/1 172.31.3.32 11:18 1:50 0.07s 0.02s -bash
who 显示已经登录的用户名、终端名称、登录时间及登录IP
[root@localhost ~]# who
root tty1 2015-11-12 14:00
root pts/0 2015-11-12 14:03 (172.31.3.32)
root pts/1 2015-11-17 11:18 (172.31.3.32)
whoami 显示当前用户的用户名
[zzd@localhost ~]$ whoami
zzd
who am i 显示登录系统的时候的用户名,即使已经切换到其他用户也显示登录时的用户
结果同who -m
[zzd@localhost ~]$ whoami
zzd
[zzd@localhost ~]$ who am i
root pts/1 2015-11-17 11:18 (172.31.3.32)
[zzd@localhost ~]$ who -m
root pts/1 2015-11-17 11:18 (172.31.3.32)
显示当前用户
w //显示当前用户,不显示登录位置
19:50:14 up 9:27, 4 users, load average: 0.31, 0.26, 0.18
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty7 :0 Thu12 31:39m 10:10 0.60s gnome-session
root pts/0 :0.0 17:09 2:18m 15.26s 0.15s bash
root pts/1 192.168.1.17 18:51 1.00s 1.24s 0.14s -bash
root pts/2 192.168.1.17 19:48 60.00s 0.05s 0.05s -bash
不显示登录位置
w -f
19:53:59 up 9:31, 4 users, load average: 0.05, 0.16, 0.15
USER TTY LOGIN@ IDLE JCPU PCPU WHAT
root tty7 Thu12 31:43m 10:10 0.60s gnome-session
root pts/0 17:09 2:21m 15.26s 0.15s bash
root pts/1 18:51 0.00s 1.04s 0.14s -bash
root pts/2 19:48 4:45 0.05s 0.05s -bash
以精简模式显示
w -s
19:54:37 up 9:31, 4 users, load average: 0.24, 0.19, 0.16
USER TTY FROM IDLE WHAT
root tty7 :0 31:43m gnome-session
root pts/0 :0.0 2:22m bash
root pts/1 192.168.1.17 0.00s -bash
root pts/2 192.168.1.17 5:23 -bash
不显示标题
w -h
root tty7 :0 Thu12 31:44m 10:10 0.60s gnome-session
root pts/0 :0.0 17:09 2:23m 15.26s 0.15s bash
root pts/1 192.168.1.17 18:51 0.00s 1.05s 0.14s -bash
root pts/2 192.168.1.17 19:48 5:54 0.05s 0.05s -bash
yexiang@ubuntu:<sboot>$ w -u yexiang
14:02:04 up 9 days, 4:40, 3 users, load average: 0.99, 1.25, 0.99
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
yexiang pts/1 10.0.4.198 10:19 3.00s 0.19s 0.00s w -u yexiang
最新文章
- Security3: Schema 和 Permission
- Python之路----------shutil模块
- xml 解析的四种方式
- oracle学习系列之三 (约束)
- d3可视化实战03:神奇的superformula
- WPF合并资源字典
- BZOJ 1637: [Usaco2007 Mar]Balanced Lineup( sort + 前缀和 )
- TC358749XBG:HDMI转MIPI CSI芯片简介
- 201521123048 《java程序设计》 第11周学习总结
- 20160222.CCPP体系详解(0032天)
- android 开发之 ListView 与Adapter 应用实践
- css---遮罩层
- [Optimization] Dynamic programming
- pycharm 安装激活操作
- eclipse 代码检查插件使用
- python第二十九课——文件读写(复制文件)
- ASP.NET文件下载各种方式比较:对性能的影响、对大文件的支持、对断点续传和多线程下载的支持
- JQuery 之 在数据加载完成后才自动执行函数
- native excel 文件已经打开的判断
- hackerrankWeek of Code 32
热门文章
- Longest Substring Without Repeating Characters[medium]
- Opencv——级联分类器(AdaBoost)
- c++——深拷贝和浅拷贝
- 在线扫描PDF JPG 图片上面文字
- ios学习路线—Objective-C(属性修饰符)
- 安卓isEmpty()的注意事项,主要判断NULL
- ARM Linux驱动篇 学习温度传感器ds18b20的驱动编写过程
- kNN分类算法实例1:用kNN改进约会网站的配对效果
- Centos 6.4 安装mysql-5.6.14-linux-glibc2.5-i686.tar.gz
- 不能存在多个@ManyToMany(fetch=FetchType.EAGER)