sslscan is an one of the tool check SSL TLS service, like HTTPS in order to find out the ciphers that are supported. You can get the certificate and output in text and XML formats, also supported version OpenSSL.

lsmod is a Linux command and it's helpful to show the status of modules in the Linux Kernel on your system. lsmod command check and showing what kernel modules are currently loaded.

We can get files last modified date, time files in your system by the command.

As a System Administrator is an important Keeping Date and Time up to date on your systems.

Some times you want see last modified files, modified files between different days the following command will help you,

Everything to check information about the hardware by commands your linux system, the following commands will get network inteface, which IP address configured to specific interface like eth0, eth1, etc...

Vim package is one of open source text editor on terminal in Linux system, this tutorial will explain how to use this tool on your terminal.