1. who = It will display a list of users who are connected with their time and
priority. If priority is 1 Log in , If 0 log Out.
2. who am i = It will display current login details.
3. stty = It will display the status of machine.
4. tty = It will display terminal where current user is working.
5. cd = It is used for different purpose.
a. only Cd is type = back to prev folder
b. cd folder-name it will call specific directory which is already available.
c. cd folder-names it will create new folder
6. pwd = It will display current path
7. ls = It will display all the available files and folder in a specific location.
8. ls -l = It will display all files with their permission and properties.
Permission:
read(1) write(2) Execute(4)
9. mkdir <dirname> = to create a new directory
10. cat>file_name = to create txt file
11. gedit filename = to create wordfile and other format file
12. rm filename = remove file
13. rm -f filename = remove file forcely
14. rm -r dir = remove directory
15. rm -rf dir = remove dir forcely
16. w = will display current login user
17. ps = to display current process
18. Top =to display top files
19. Touch filename = create file
20. Gedit filename = edit file
21. Cp file1 file2 = used to copy file from 1 to 2 file
22. Mv file1 file2 = to move file1 to file 2
23. Mv -r dir dir = to move directory
24. Cp -r dir dir = copy dir
25. Tail = used to display content last 10
26. Head = used to display first 10 output
27. Changing Permission
i) Chmod rwx file-name
ii) Chmod 777 file-name
iii) Chmod 735 filename
Owner User Group
1 2 4
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