Common commands and application scenarios in Linux and Common commands in linux

Common commands and application scenarios in Linux and Common commands in linux
1. Switch users

Command: su-paytest. Press enter to enter the password.

2. view the File System

Command: df-a (used to view the usage of the file system)

Command: du-shx * (used to list the size of all folders)

3. connect to other servers through SSH

Command: ssh paytest@210.32.22.51, enter the password.

4. send packets using Telnet commands

Command: telnet 210.32.22.51 5010. Press enter and enter the content of the message to be sent.

5. Permanent path alias setting

Command: vi ~ /. Bash_profile

Add: alias log = 'CD/app/applogs'

Command: source ~ /. Bash_profile

6. Related commands for compressed packages:

Tar package compression: tar-cvf filename.tar test1 test2 ......

Decompress the tar package: tar-xvf filename.tar

Tar package browsing: tar-tvf filename.tar

------------------------------------------------------------------

Zip package compression: zip-r/app/filename.zip/app/filename/

Decompress the zip package: unzip filename.zip

7. Check whether the ports under the server are enabled normally.

Command: netstat-lnp | grep 61616 (check whether the ActiveMQ Message Queue Service is started properly)

8. File Transfer between servers

Command: scp filename user @ IP: Path

Example: scp key.txt paytest@210.32.22.51:/app/keytest/

Note: user is the target host user name and IP is the IP address of the target host.

 

(To be continued ...)