How does the Ubuntu system view the location of the software installation?

How does the Ubuntu system view the location of the software installation? Where to go, you can look like this:

Code:

Dpkg-l&http://www.aliyun.com/zixun/aggregation/37954.html ">NBSP; Software name

Deb packaged software, double-click can be installed, and automatically resolve dependencies, installed can also be deleted in the new Tak, where the general situation no need to care

Try to use official sources and trusted third-party sources, and do not install software from the unknown Deb, or install the Deb software without certification.

If it is apt or dpkg installed, you do not need to know

If it's green, unzip yourself to a directory (generally choose opt)

If you compile it yourself, you can./configure--prefix= specified directory

In many cases, they are installed under USR, and of course man and Doc are dispersed in the appropriate directory. Hard links or soft links will be established under bin