centos 常用命令笔记

环境： Centos 7

1、新建账号：

    [[e-mail] ~]# sudo adduser pengfeima

2、为新账号初始化密码：

[[e-mail] ~]# passwd pengfeima
Changing password for user pengfeima.
New password: 
BAD PASSWORD: The password fails the dictionary check - it does not contain enough DIFFERENT characters
Retype new password: 
passwd: all authentication tokens updated successfully.

3、为该账号添加切换root权限的指令:

    使用命令“visodu”

在代码片段中找到“centos ALL=(ALL) NOPASSWD: ALL” 

修改为centos,pengfeima ALL=(ALL) NOPASSWD: ALL或者添加该行.

4、采用reboot 命令重启centos7服务

5、添加用户到root 分组 ：gpasswd -a shunhe root

6、tar 压缩与解压

01-.tar格式
解包：[＊＊＊＊＊＊＊]$ tar xvf FileName.tar
打包：[＊＊＊＊＊＊＊]$ tar cvf FileName.tar DirName（注：tar是打包，不是压缩！）
02-.gz格式
解压1：[＊＊＊＊＊＊＊]$ gunzip FileName.gz
解压2：[＊＊＊＊＊＊＊]$ gzip -d FileName.gz
压 缩：[＊＊＊＊＊＊＊]$ gzip FileName

03-.tar.gz格式
解压：[＊＊＊＊＊＊＊]$ tar zxvf FileName.tar.gz
压缩：[＊＊＊＊＊＊＊]$ tar zcvf FileName.tar.gz DirName

04-.bz2格式
解压1：[＊＊＊＊＊＊＊]$ bzip2 -d FileName.bz2
解压2：[＊＊＊＊＊＊＊]$ bunzip2 FileName.bz2
压 缩： [＊＊＊＊＊＊＊]$ bzip2 -z FileName

05-.tar.bz2格式
解压：[＊＊＊＊＊＊＊]$ tar jxvf FileName.tar.bz2
压缩：[＊＊＊＊＊＊＊]$ tar jcvf FileName.tar.bz2 DirName

06-.bz格式
解压1：[＊＊＊＊＊＊＊]$ bzip2 -d FileName.bz
解压2：[＊＊＊＊＊＊＊]$ bunzip2 FileName.bz

07-.tar.bz格式
解压：[＊＊＊＊＊＊＊]$ tar jxvf FileName.tar.bz

08-.Z格式
解压：[＊＊＊＊＊＊＊]$ uncompress FileName.Z
压缩：[＊＊＊＊＊＊＊]$ compress FileName

09-.tar.Z格式
解压：[＊＊＊＊＊＊＊]$ tar Zxvf FileName.tar.Z
压缩：[＊＊＊＊＊＊＊]$ tar Zcvf FileName.tar.Z DirName

10-.tgz格式
解压：[＊＊＊＊＊＊＊]$ tar zxvf FileName.tgz

11-.tar.tgz格式
解压：[＊＊＊＊＊＊＊]$ tar zxvf FileName.tar.tgz
压缩：[＊＊＊＊＊＊＊]$ tar zcvf FileName.tar.tgz FileName

12-.zip格式
解压：[＊＊＊＊＊＊＊]$ unzip FileName.zip
压缩：[＊＊＊＊＊＊＊]$ zip FileName.zip DirName

13-.lha格式
解压：[＊＊＊＊＊＊＊]$ lha -e FileName.lha
压缩：[＊＊＊＊＊＊＊]$ lha -a FileName.lha FileName

14-.rar格式
解压：[＊＊＊＊＊＊＊]$ rar a FileName.rar
压缩：[＊＊＊＊＊＊＊]$ rar e FileName.rar      
rar请到：下载！
解压后请将rar_static拷贝到/usr/bin目录（其他由$PATH环境变量
指定的目录也行）：[＊＊＊＊＊＊＊]$ cp rar_static /usr/bin/rar