If you want to change Crontab file editor either VIM or NANO instead of using the system default editor, you need to use VISUAL environment variable.
Before that, make sure that VIM or NANO installed in your system if you want to use them.
Specify NANO as the editor for crontab file
export VISUAL=nano; crontab -e
Specify VIM as the editor for crontab file
export VISUAL=vim; crontab -e
In order to change the your CentOS or Cloudlinux hostname permanently, you need to edit two files. The files are
Prior to changing the hostname, it is wise to check the existing hostname.
1. To do this issue the following command after SSH to you server
hostname
For example, my hostname is “host.domain.net”
2. Once completed, edit “/etc/sysconfig/network” file by issuing the following command
nano /etc/sysconfig/network
The example output as below,
NETWORKING="yes" NETWORKING_IPV6="no" GATEWAYDEV="eth0" HOSTNAME=host.domain.net DOMAINNAME=domain.net
3. Look for “HOSTNAME=host.domain.net”, and change to your desire hostname and save the file. Take note on the “hostname” format. It must be fully qualified domain name (FQDN).
4. Next, edit “/etc/hosts” file by issuing the following command
nano /etc/host
The example output as below,
127.0.0.1 localhost 88.88.88.88 host.domain.net
5. Again, look for “host.domain.net”, and change to your desire hostname as above and save the file.
6. Finally, and then rebooting the system
reboot