Redhat basic operation of Linux

############### #虚拟机基本操作 ##########################


[[email protected] desktop]$ rht-vmctl start Desktop # # # #开启desktop虚拟机

# # # #操作命令 (hostname +virtual machine control) + operation mode + Operation Object ######
Starting desktop.
[Email protected] desktop]$ rht-vmctl View Desktop # # # #显示开启的虚拟机desktop
[[email protected] desktop]$ rht-vmctl Reset Desktop # # # #重置desktop虚拟机
Is sure you want to reset desktop? (y/n) y # # # #确认是否重置desktop虚拟机
Resetting desktop.
Powering off desktop.
Creating Virtual machine disk overlay for Rh124-desktop-vda
Creating Virtual machine disk overlay for RH124-DESKTOP-VDB
Starting desktop.
[[email protected] desktop]$ rht-vmctl start Desktop
Error:desktop not started (is already running)
[Email protected] desktop]$ rht-vmctl poweroff Desktop # # #关闭desktop虚拟机
Powering off desktop.
#################################### #end ###############################################

[Kiosk @ foundation19 Desktop] $
User name Host name directory identity prompt
Kiosk # # #使用这台主机的用户名称, (who is the user who started bash)
Foundation19 # # #运行bash的主机名称, (which host bash is running on)
Desktop # # # #在这台主机的那个目录下运行bash, (in your system directory)
$ indicates that the user running bash is a normal user prompt

# indicates that the user running Bash is a super user prompt

... Is any length
[] The brackets are optional and
<> angle brackets are required to be added.


LS # # # list View
ls-l/test
How commands (parameters) are viewed to see which directory

passwd Student # # #修改student用户密码
passwd # # #为修改用户密码命令
1, the password must be an unordered combination of alphanumeric, and at least 8 bits, the normal user password can not be duplicated with the past
Watch-n 1 passwd-s Student One second monitoring user password information
Passwd-s Student # # #查看用户密码信息
-L # # #锁定用户密码 Lock
-U # # # #解锁用户的密码unlock
-E ##### #强制使用户密码过期 enforce
-N ###### Minimum password expiration minimum
-X ##### #最大用户密码有效期max
-D ##### Remove user password Delete
-W # # # password warning period waring
-I # User password inactive period inactive
################ #end #####################
Gedit Hello.exe Editing the contents of a file
Cat Hello.exe Viewing the contents of a file
Head Hello.exe View the first 10 lines of the file contents
Head-n 5 Hello.exe View the first 5 lines of the file contents
Tail Hello.exe View the following 10 lines of the file contents
Tail-n 5 Hello.exe View the following 5 lines of the file contents
The file type is determined by the contents of the file, and the suffix of the file is unimportant.

File hello.exe### #查看hello. exe files type

File for view ask Price type command

################################

1 Kanji for 3 bytes,
There is one character (bytes) at the end of each line.

Wc-l Test Line count rows
-M statistic character number
-C Statistics byte number
-W Count Count
########################################
History View Enter historical commands
！ Number # # # #为执行第几行
！ Letter # # # #执行最近以这个字母开始的命令行
Ctl+r # # #查找有关键字的命令行执行

TAB key # # # #可以补全历史命令

Kernel # # #你出门逛街之前要打扮, why to dress up, this is the kernel, this is your mind, is the program of control programs, the mother program
OS # # #提供给应用程序运行的环境
UNIX Linux Windows # # # #都是指的内核
UNIX has iOS, IBM's AIX, etc.
Linux has Android, Redhat, etc.
Lib Library # # # #是 (Machine language statement) shorthand set and
CD switch path relative path # # #在一个相对的空间目录下中找到的文件
PWD shows the absolute path to start with the root directory

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Redhat basic operation of Linux