Linux commands required by Java developers

Linux commands required by Java developers

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This article does not explain all commands in detail, but only provides common usage and explanations. You can use--helpView help or use google search to learn.

1. Search for files

find / -name filename.txtFind the filename.txt file under/directory by name.

find . -name "*.xml"Recursively search all xml files

find . -name "*.xml" |xargs grep "hello world"Recursively search for xml files containing hello world in all files

grep -H 'spring' *.xmlSearch for xml files containing spring.

find ./ -size 0 | xargs rm -f &Delete an object of zero size

ls -l | grep 'jar'Find all jar files in the current directory

grep 'test' d*Display all the lines containing test in files starting with d.

grep 'test' aa bb ccThe row Matching test is displayed in the aa, bb, and cc files.

grep '[a-z]\{5\}' aaDisplay All rows of a string that contains at least five consecutive lowercase characters.

2. check whether a program is running

ps –ef|grep tomcatView All tomcat Processes

3. Terminate the thread

kill -9 19979Terminate the thread with the thread number 19979

4. view files, including hidden files

ls -al

5. current working directory

pwd

6. Copy an object

cp source destCopy a file

cp -r sourceFolder targetFolderRecursively copy the entire folder

scp sourecFile romoteUserName@remoteIp:remoteAddrRemote copy

7. Create a directory

mkdir newfolder

8. delete a directory

rmdir deleteEmptyFolderDelete empty directoryrm -rf deleteFileRecursively delete all contents in the directory

9. Move files

mv /temp/movefile /targetFolder

10. Heavy command

mv oldNameFile newNameFile

11. Switch users

su -username

12. Modify file permissions

chmod 777 file.java// File. java permission-rwxrwxrwx, r indicates read, w indicates write, and x indicates executable

13. compressed file

tar -czf test.tar.gz /test1 /test2

14. List compressed files

tar -tzf test.tar.gz

15. decompress the file

tar -xvzf test.tar.gz

16. view the first 10 lines of the file

head -n 10 example.txt

17. View 10 lines at the end of the file

tail -n 10 example.txt

18. view log files

tail -f exmaple.log// This command will automatically display the new content. The screen will display only 10 lines of content (configurable ).

19. Run the command as a super Administrator

sudo rm a.txtDelete an object as an administrator

20. view port usage

netstat -tln | grep 8080View port 8080 usage

21. Check which program the port belongs.

lsof -i :8080

22. view the process

ps aux|grep javaView java Processes

ps auxView all processes

23. list the contents of a directory in a tree chart

tree a

Ps: Use the tree Command in Mac

24. File Download

wget http://file.tgzInstall the wget command on mac

curl http://file.tgz

25. network detection

ping www.taobao.com

26. Remote Logon

ssh userName@ip

27. Print Information

echo $JAVA_HOMEPrint the value of the java home environment variable

28. Common java commands

Java javac jps, jstat, jmap, jstack

29. Other commands

Svn git maven

28. linux Command Learning Website:

Http://explainshell.com/

References:

Troubleshooting of Linux port occupation (Error: JBoss port is in use. Please check)

Powerful and Common commands in linux: find and grep

Linux commands

Please add it !~

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