Fedingo

How to Add User to Sudoers in Linux

Sudo users can run commands as root in Linux. Here is how to add user to sudoers in Linux.

Many times you may need to get free RAM or check RAM size in Linux. Here is how to measure RAM size in Linux.

MySQl Row Number is a very useful window function in MySQL. Here is MySQL Row Number Function & its applications.

Sometimes you may need to turn off firewalld. Here is how to disable/stop firewalld in CentOS, Redhat Linux.

firewalld is a dynamic firewall manager for Linux. Here is how to configure firewalld in Redhat, CentOS Linux.

Sometimes you may need to change hostname of your machine on network. Here is how to change host name in Debian/Ubuntu Linux.

Sometimes you may need to connect to PostgreSQL database and send SQL queries. Here is how to do it.

Sometimes you may need to view or sort files by size. Here is how to sort files by size in Linux.

Sometimes you may need to merge multiple PDF files into a single file. Here is how to combine multiple PDF files into one file in Linux.

Sometimes you may need to query databases using python. Here is a python script to run sql query.