How to Reset Windows Password in Linux Rescue

If you lost your windows user password, you can boot into Linux Live CD or Rescue CD and reset your

How to run docker with csf firewall

When running docker on a server with CSF firewall, you may face network connection error because iptables rules added by


grubby is provided by package grubby on RHEL based systems. To install grubby, run To list all kernels, run To

How to list iptables rules

To view all rules in iptables, run Or To list iptables rules with out resolving IP to hostname To show

ModuleNotFoundError: No module named ‘MySQLdb’

When running migration for a Django application with “python migrate”, I got the following error message To fix install

error: invalid command ‘bdist_wheel’

When installing a python module on Ubuntu, I got the following error message The error is fixed by installing Back


How to change varnish port in Ubuntu

To change the varnish port, run the command It opens an editor, in the editor, paste the following This will

mysqldump errno: 24 Can’t open file when using LOCK TABLES

When backing up a MySQL database using mysqldump command, I got the following error. The error is due to open_files_limit

Mounting partition stored inside Logical Volume

On a KVM Virtual machine using LVM storage, the LVM disk is partitioned as follows. I want to mount partition


FreeBSD /usr/ports: No such file or directory.

On a FreeBSD server, when I change the directory to “/usr/ports”, got following error To fix this, run Back to

How to Delete a Virtual Machine in Proxmox

How to Delete a Virtual Machine in Proxmox

Here is what you need to do to delete a VM in proxmox. 1) log in to Proxmox. 2) Find

Apache web server

How to configure Security Headers in Apache

Enable HSTS Enable X-Frame-Options Enable X-XSS-Protection Enable X-Content-Type-Options Enable Referrer-Policy Enable Content Security Policy (CSP) Enable Permissions-Policy Back to Apache