Shulou(Shulou.com)06/02 Report--

Basic system common commands

1. System related command

1.1ping tests network connectivity

1.2nmtui graphical interface configuration network card address information

1.3telnet tests whether the remote service is enabled properly.

1.4Shutdown shuts down / restarts the system

-r 5/now/0: restart the system / restart the system now

-h 5/now/0: shut down the system / shut down the system now

-c: cancel the restart or shutdown operation

1.5man

-- help help commands display command help / display profile help

1.6mount

Umount disk storage device mount command

Disk storage device uninstall command

Umount/mnt (mount point)

1.7hostname modify host name / view full host name

1,8systemctl

Systemctl start/stop/restart

Systemctl status

Systemctl get-default

Systemctl set-default multi-user.target Management Service running status start / restart / stop

Service name

Service name-View the running status of the service

View system operation mode

Set the system operation mode

1.9 ifdown Nic name (eth0)

Ifup network card name (eth0) stop the specified network card service

Start the specified network card service

Ifdown eth0&&ifup eth0

1.10 hostnamectl modify host name

Hostnamectl set-hostname xxx

1.11 df

-h

Iscpu

Free

Free-h

W View disk mount information / view disk usage

The information displayed is human readable information.

View CPU information

View memory information

View load / view login system user information

1.12 blkid displays the UUID identification information of the disk

1 export 13 is used to set environment variables

1.14 source immediately loads the environment variable file configuration information

/ etc/profile

1.15 alias View Alias Settings / set Alias

Aliass alias = "alternate command information"

1.16 unalias

Unalias aliases Unaliases Settin

1.17 which

Which cp view command file absolute path information

1.18 runlevel View system Runtime

1.19 init

Init 0 toggles system runlevel

Toggle system run level

1.20 yum

Yum install-y software name installation software command

Install the specified software

1.21 rpm

Rpm-ivh xxx.rpm installation package

1.22 uniq

Uniq-c cancels the repetitive operation of the information

Count how many times the repeated information appears

1.23 uname

Uname-a view system information

1.24 useradd create user

1,25 passwd

Passwd--stdin modifies user password

Interaction-free password modification

1.26 sz-y

Rz-y downloads linux host data to Windows host

Upload Windows host data to linux host

two。 File directory command

2.1mkdir create directory command

-p create directory command

2.2.ls list displays system data information

-d check whether the specified directory exists

-a show all data information (show hidden files)

-h the information displayed is human readable information

-l displays file detailed attribute information

2.3cd changes directories

Cd/cd~ quickly returns to the home directory of the system user

Cd.. Quickly return to the previous directory

Cd../.. Quickly return to the superior directory

Cd- quickly returns to the last directory

2.4 pwd displays the current path information

2.5touch create File

2Jing 6 cat view the contents of the file

2.7 vi Editing File contents

I enter insert mode

Wq saves and exits

Q exit directly

: q! Forced exit

2.8echo outputs the information to the screen

Echo xx > file inputs information into a file

2.9cp copy data command

-r Recursively copy data (copy command)

2.10mv move data command / rename file name

2.11rm delete data command

-r Recursively delete information

-f forcibly delete information (ignore prompts)

-rf forcefully deletes directories

2.12head view file header information (the first 10 lines are viewed by default)

Head-n specifies to look at the first few lines

2.13tail view the tail information of the file (the last 10 contents are viewed by default)

Tail-n specifies to view the next few lines

Tail-fhand Murf tracks changes in real-time view of file information

3 user management commands

3.1su switching user

Su-

3Person2id View user information / check whether the specified user exists

3.3whoami to check the user identity of the logged-in system

Common commands for advanced systems

1 swordsman command

1.1find find File command

1.2grep filtering filtered file content

1.3sed replacement modifies file content

1.4awk analyzes and processes the log files.

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