LInux own service (command)

First, the mode of operation

the init

the init run level corresponds to the configuration file: inittab
View: #cat / etc / inittab



① switch to the command mode pure
# init3

② switch back to the desktop
# init5
③ not permanently setting mode command mode

Second, the user and user group management

Three profiles
/ etc / passwd store user information
/ etc / group store user group information
/ etc / shadow store password information

1, user management

Add User ①




② modify user


③ set a password

to view the password settings: # tail -3 / etc / Shadow

④ delete user

#userdel -r username

2, user group management

Adding user groups ①


② user group editing

③ remove a user group
#groupdel User Group Name

Third, the network settings

NIC configuration file locations:
/ etc / sysconfig / Network-scripts

Restart card
method 1: service network restart
Method 2: # / etc / init.d / Network restart



== extensions: Create Shortcut (soft link)
Syntax: Path #ln -s original file path shortcut

to restart when a card
# eth0 ifdown
#ifup eth0

Four, ssh service

Remote terminal tool
Xshell, secureCRT, Putty
file transfer tools: Filezilla

Extended 3: transfer files via the command-line tool

Tools: PSCP.exe

downloaded to Windows

uploaded to Linux