post thumbnail

How to Create an Archive using tar Command

In Linux, tar command is the primary utility to create compressed archive files and directories. “tar” stands for tape archive and it is actually archiving file format. The following example…

post thumbnail

How to Change Hostname on CentOS 7.0/RHEL 7.0

Q. I have CentOS 7.0 virtual private server, but the default hostname still localhost.localdomain. How do i change the hostname to my prefer hostname or FQDN ? [root@localhost ~]# hostname…

post thumbnail

How to Perfom SMTP Test Command in Linux

Q. I just installed postfix on my linux virtual private server (VPS), but i am not sure how to verify the SMTP service and perform SMTP test to ensure the…