Differences between wget, apt-get, and yum rpm in linux

Wget is similar to Thunder. It is a download tool. It downloads
through the three most common TCP/IP protocols: HTTP, HTTPS, and FTP, and can use HTTP proxy. The name is a combination of "World Wide Web" and "get".

yum: is redhat , The software installation method under the centos system, based on Linux,
         the full name is Yellow dog Updater, Modified,
         is a shell front-end package manager in Fedora, RedHat and CentOS
         based on RPM package management, which can automatically download RPM packages from a specified server And installation, it can automatically handle dependencies and install all dependent packages at once.

rpm: software management; redhat's software format rpm r=redhat p=package m=management
             is used to install and uninstall .rpm software


Concatenation :
   use wget Download an rpm package, and then use rpm -ivh xxx.rpm to install the software. If it is troublesome, you
   can directly use yum install sqoop to automatically download and install the dependent rpm software.


ap-get is a software installation method under ubuntu. It is based on debain.