CentOS 6 Invalid release/repo/arch combination
When i run yum update on a CentOS 6 server, i get error “Invalid release/repo/arch combination/”. This error is due to CentOS…
Linux
Firewalld
firewall-cmd is used to manage firewall (iptables). It is used by default on latest version of CentOS, RHEL. Check firewall status To…
Firewalld list all open ports
To list all open ports in firealld, run firewall-cmd –list-ports You may need to also use [root@oc1 ~]# firewall-cmd –list-services http https…
Install Xfce VNC remote desktop on CentOS 7
Xfce is a lightweight linux desktop environment. You can install Xfce on a remote server or virtual machine, connect to it using…
Firewalld list rules
To list rules use command firewall-cmd –list-all –zone=public To list all open ports firewall-cmd –list-ports Example [root@centos7 zones]# firewall-cmd –zone=public –add-rich-rule=’rule family=”ipv4″…
Install Monit on CentOS
Monit allow you to monitor process. It can restart failed process or alert when server is overloaded. On CentOS server, you need…
ls
ls command is used to list files in linux. It is same as dir on windows. List all files in long format…
Ubuntu 20.04/22.04 settings won’t open
On Ubuntu 20.04/22.04 settings won’t open. This may be caused by some software install/update. I tried to run From the terminal, I…
Sent maldet scan report to email
After running a scan, maldet will give you command to see result like maldet –report SCAN_ID If you need this email sent…
Install Preview Generator in Nextcloud
To enable preview for files in nextcloud, you need to install “Preview Generator” from next cloud app store https://apps.nextcloud.com/apps/previewgenerator To install login…
Enable SEO url in nextcloud
To enable SEO url in next cloud, first make sure your web server have mod_rewrite module enabled. Edit config.php file vi config/config.php…