Linux Commands

1.  rm Command-Remove File or Directory
                     rm -r folder_name-Delete Folder
              rm -rf folder_name-Recursive deletion,force delete

2. SCP Command-Used to copy file between hosts
                     scp -i ~/.ssh/fpem.pem -r  source destination

3. SSH Command-For login into a remote mechine

                    ssh -i ~/.ssh/pem_file.pem ubuntu@host_system_name

4.  lscpu Command-Get CPU/System Information
                     lscpu

5.  Get Memory Information
                     cat /proc/meminfo

6.  Get Memory/CPU Information
                     top

7.  Rename a File
                     mv old_file_name new_file_name

8.  Extract tar File
                     tar -xvf tar_file_name.tar