Linux Archives - Page 21 of 42

Sed Command to Replace String in File

Sed is a powerful command to work with string & text in Linux. Here is sed command to replace string in file.

Sometimes you may need to view banned IP addresses in Fail2ban. Here is how to show banned IP in Fail2ban.

Sometimes you may need to unban ip addresses with Fail2ban. Here are the steps to do it.

Sometimes you may want to know which shell you are using, which shells are installed on your system and how to change shell. Here is how to do it.

Sometimes you may need to find files with special characters in their name in Linux. Here are the steps to do it.

Sometimes you may need to insert text at certain line in Linux. Here is how to do it using ed, sed, awk, commands.

Sometimes you may need to create RPM package for python module or script. Here are the steps to create RPM from python code.

NMAP is a useful tool for network mapping. Here is how to use NMAP in Kali Linux.

VirtualBox allows you to run virtual machines on your system. Here is how to install VirtualBox in Ubuntu.

Python dictionary allows you to store different data types. Here is how to delete dictionary key while iterating in python.