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  • finger命令
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[~]$ finger -p claylin
Login: claylin        Name: claylin
Directory: /Users/claylin           Shell: /bin/bash
On since 五  3 13 18:54 (CST) on console, idle 4 days 0:22 (messages
off)
On since 一  3 16 08:40 (CST) on ttys000
On since 一  3 16 12:10 (CST) on ttys001, idle 2:14
On since 六  3 14 13:55 (CST) on ttys002, idle 0:20
On since 六  3 14 14:19 (CST) on ttys003 (messages off)
No Mail.
  • size命令:输出可执行程序的代码段、初始化数据段和未初始化数据段的大小,单位为bytes
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[auep]$ size a.out 
__TEX   T__DATA   __OBJC       others       dec          hex
4096    4096      0            4294971392   4294979584   100003000
  • mkdir -p 命令可以创建目录和子目录,如果目录已存在,不会报错
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#!/bin/bash
month=`echo date +%m`
day=`date +%d`
time=`date +%k%M`
mkdir -p $month/$day/$time
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