Pkget used for installing packages when you dont have root and/or sudo it's as simple as that really...
wget https://raw.githubusercontent.com/0x00009b/pkget/master/pget && chmod +x pget
And then simply
./pget <package_name> #example: ./pget nmap
This tool is only for debian based systems and will only work with apt for you linux n00bs here is a list of some common debian based distos
Thanks for this https://github.com/0x00009b