Here is a little tip to erase your command line history on a linux machine, simply use the history command, that's a built'in shell command which allows you to show your command history in your terminal. Having an history of your command is ...
Are you tired to use top/free/fdisk, and other tools to show your system health ? So Glances is for you. It provides many system informations (process, CPU, network, etc) in your terminal
The easiest way to install it is to use pip (python ...
pdftk, is a useful command line utility that allow to manipulate your pdf files. You can install it through your favorite package manager (example under Fedora)
natjohan# yum install pdftk
The syntax of pdftk is very simple :
pdftk <input_files_seperate_by_spaces ...