Tagged: Centos

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systemctl command not found

Q. systemctl: command not found [root@127.0.0.1 ~]# sudo systemctl daemon-reload sudo: systemctl: command not found Ans. CentOS 6 does not use systemd. On CentOS 6 we use chkconfig command to start/active the service automatically...

linux-600x300 0

What is Daemon Process

In multitasking computer operating systems, a daemon is a computer program that runs as a background process, rather than being under the direct control of an interactive user. Traditionally, the process names of a...

linux-600x300 0

What is Orphan Process

An Orphan process is a computer process whose parent process has finished or terminated, though it remains running itself. In Normally an orphan means someone whose parents are dead the same thing is followed...

linux-600x300 0

What is Zombie processes in Unix

On Unix and Unix-like computer operating systems, a zombie process or defunct process is a process that has completed execution but still has an entry in the process table: it is a process in...

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Check Your CentOS Version Number

The simplest way to check your CentOS version number is through the command line. Login to your CentOS server using SSH and run the following command: cat /etc/centos-release This should return the following CentOS...