It is an old Toshiba, intel pentium(R) M processor 1.73GHz, 2BG RAM. The previous owner installed Windows 7 on it. It's ok but I want to try a lightweight and small Linux based OS. It will be used primarily for connecting to Amazon AWS via SSH, and SFTP client and a browser, and most likely Atom editor. That's probably be all.
I recommend using Lubuntu, because it's very easy to use and it's lightweight. It ran fine on my Asus EEE PC 701 with a 800 MHz processor and 512 MB RAM...
Based on your knowledge and your flavour there are various distributions for your need:
- Gentoo Linux (maybe with a build host - personal I used this on a 256MB 800 MHz embedded Box and it runs very, very smooth)
For better recommendations it's real important, that you tell us something about yourself: how big is your knowledge, how many time do you have, how complicated is ok, etc etc