List of Linux command

basic level

1. virtualip list -To check what actually instance are installed in server.
2. shutdown cmds - To shutdown server
3. $free - to check free RAM in the system

intermediate level

1. compgen -u : To check the list of users in Linux machine
2. compgen -g :To get the list of groups in the linux machine.
3. compgen -c :list of complete authorizations available in linux machine
4. less /etc/passwd :to get the list of user list in detail 
5. whereis - executable file location in Linux machine
6. pwd - Displays present work directory
7. Whoami - Dispaly current user details
8. cp - to copy the file in linux, to take backup of file in linux
9. cat - concatenates and display files.
10. vi - to edit the file
11. How to change file owners in LINUX and UNIX using PUTTY tool
12. NFS - No Root Squash
    

Advanced linux commands

ping -to check the network connect between two linux servers

Wget -to check the availability of file in the remote server

• command pidof- To list all the process ID of one service @ OS level  (ACC)
  

List of System monitoring:

System monitoring commands

mount and unmount cmd

SAP linux administration:

Default user groups assigned to <sid> adm user

Automation scripts:

1. How exactly need to write shell scripts.

        Ans:       Click here

2. importance of interpreter in the scripts.

      Ans:         Click here

3. How to create and use variables.

    Ans:           Click here

4.Testing and decision making.
     
     Ans:         Click here

5. if statements

   Ans:         Click here

6. if else condition

  Ans:         Click here

7.For loops

  Ans:     Click here

8.read cmd

 Ans:   Click here

9.position parameters

Ans:   Click here

10.exit code sample test condition.

Ans:  Click here

11.Functions.

Ans:   Click here

12. Wildcards

Ans:   Click here

13. How to include Linux commands in scripts & using echo for better visibility.

Ans:    Click here

14. How to search for one particular word in large size files.

Ans:   Click here

15. How to delete files older then 90 days using scripts.

Ans:  Click here

16. How to take backup of file system using Linux scripts.

 Ans:  Click here

17. check the file system space with reference to threshold value using Linux scripts.

Ans:  Click here

18. rsync and csync and their significance.

Ans: Click here

19. sed

Ans:  Click here

20.Total disk space used  by the server.

Ans: Click here

21.touch test in Linux

Ans: Click here

22.Server information using Linux scripts

Ans: Click here

23. Script that sends mail automatically when SAP Application is down( manually)

Ans: Click here

24.consumption of the work process during an specific task - using script (ACC)


Frequent task:

25. Coping backup from source to target screen - SCP command

Windox server - 2016

6.Difference between Disk Cleanup and Disk Defragmenter
5.How To Backup Windows Server 2016