基础篇--使用终端

使用终端(可以右键点击打开,也可以ctrl+alt+t打开)

date命令:

[root@localhost ~]# date
Fri May 29 06:58:24 EDT 2015
[root@localhost ~]# date +%R
06:58
[root@localhost ~]# date +%x
05/29/2015

passwd命令:

[root@localhost ~]# passwd
Changing password for user root.
New password: 
BAD PASSWORD: The password is shorter than 8 characters
Retype new password: 
passwd: all authentication tokens updated successfully.

file命令:查看文件类型

[root@localhost ~]# file command.txt 
command.txt: ASCII text
[root@localhost ~]# file rhel.iso 
rhel.iso: # ISO 9660 CD-ROM filesystem data 'RHEL-7.0 Server.x86_64          ' (bootable)

head命令:查看文件的头默认10行(使用-n num)

[root@localhost ~]# head /etc/passwd
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
operator:x:11:0:operator:/root:/sbin/nologin

wc命令:统计行数与大小

[root@localhost ~]# wc command.txt 
 6  5 28 command.txt
[root@localhost ~]# wc -w command.txt 
5 command.txt
[root@localhost ~]# wc -l command.txt 
6 command.txt
[root@localhost ~]# wc -c command.txt 
28 command.txt

在新版本中,rhel的自动补齐很强大,即使很多参数也可以自动补齐!

script命令:启动一个后台记录脚本!

原文地址:https://www.cnblogs.com/BloodZero/p/4539275.html