Replace old text with new text Linux Command

ERROR:- The response from the remote server was: 550 Please turn on SMTP Authentication in your mail client. mail-qk1-f172.google.com [209.85.222.172]:36503 is not permitted to relay through this server without authentication. SOLUTION:- Manage SMTP restrictions Click Enable to deny users the ability to bypass your mail server to send mail. To allow users the ability to bypass your…

If you’re on a cPanel server, you’ve probably noticed a sizable folder called ‘virtfs’ sitting in /home, which would appear at first to be using a ton of space. Your first inclination might be to delete it, but don’t! Most likely, the files in that folder are actually just hard links or bind mounts and…

The way to reset the root password on centos7 is totally different to Centos 6. Let me show you how to reset root password in CentOS 7. 1 – In the boot grub menu select option to edit. 2 – Select Option to edit (e). 3 – Go to the line of Linux 16 and…

Home and navigation When you first log into your server, you will be in your home directory. For the root user, this is /root/. Linux folder structure Linux uses a nested folder structure to store different files. The top-level directory is considered the root directory, and is designated by /. Folders beneath the root level…