Unless stated otherwise installation of these applications is as easy as typing:
wajig install <application-name-in-lowercase>
You need wajig for this to work. You can install it with:
sudo apt-get install wajig
Wajig is a friendly front end to Debian’s (and therefore also Ubuntu’s) package system APT (the Advanced Packaging Tool), dpkg, apt-cache, apt-search, …
getting all available subcommands with
wajig <TAB><TAB>is just nice
tab-completion for package-names rocks, e.g.
wajig install krus<TAB>:)
wajig install <some-package>
can be substituted with:
sudo apt-get install <some-package>
waji<TAB> ins<TAB><SPACE> <package-name> takes 9 keystrokes while
sud<TAB><SPACE> apt-g<TAB> i<TAB> <package-name> needs 13 keystrokes and contains a minus. ;)
If you love clicking around, there are also some graphical apt-frontends.
If you ever used Norton Commander, Total Commander or any other twin panel file manager, then Krusader is for you. It’s the reason I switched from Gnome to KDE (besides great keyboard shortcut capabilities). Check out the screenshots!