How to determine the architecture of an installation or Live CD/DVD?
21528
How can I find the version of Ubuntu that is installed?
2702
How to customize the Ubuntu Live CD?
39001
How do I create a customized ISO of Ubuntu that can be installed on multiple systems, a la OEM configuration?
113563
How to go about determing the System Type of my setup?
153918
Is there a Ubuntu sanity check?
8781
Where can I get a clean ISO of a specific build of Windows 10?
93880
How do I check system specifications?
96810
Given a package name, how can I find out what will change if I install the package?
49658
Elegant way to check for missing packages and install them?
68366
Checking installed packages
63514
How do I decide what version of Ubuntu to install?
114175
How do I test if another installation is already in progress?
32321
Quick way to tell if an installed application is 64-bit or 32-bit
111810
How do I check the checksum of a download and why should I?
8052
How can I check the integrity of a downloaded Ubuntu CD?
113500
How can I find out which package installed a particular executable?
22044
How to choose where the software is stored when installing via Ubuntu Software Center