How to get information on available packages for download in linux?

Question

linux

What is up, programmer.
If I want to download something, but I don't know the exact name, how can I find out without going to Google?
It would be the official repositories that would be scanned as, through the terminal.
I use ubuntu.

Answer 1

• Ubuntu Software Center (Ubuntu < 16.04)
  
• Gnome Software (Ubuntu >= 16.04)
  
• Synaptic (the interface is more functional, I recommend it, it is installed additionally in any version, it came out of the box a long time ago)
  
• aptitude (if you want, there is a pseudo-graphical interface in the terminal)
  
• apt-cache search keyword(if purely through the terminal without pseudo-graphics)
  

Answer 2

I won't say anything about bubunta, but on the "hat rack" (RedHat, CentOS, Fedora) it's yum provides "*/<something>". For example, I know that the program I need is called kakayatofignya. To search for it in all configured turnips, yum provides "*/kakayatofignya" is done, and if something is found, the package name, the name of the turnip and everything else that needs to be put will be given.