$ sudo service SERVICENAME start         [service name like httpd,mySQL etc]
$ sudo systemctl start SERVICENAME

$ sudo service SERVICENAME stop
# sudo systemctl stop SERVICENAME

$ sudo service SERVICENAME restart
$ sudo systemctl restart SERVICENAME 

$ sudo service SERVICENAME status
$ sudo systemctl status SERVICENAME
$ sudo systemctl is-active SERVICENAME 
$ sudo systemctl show SERVICENAME

$ sudo apt install AppName
$ sudo yum install appName

$ sudo apt remove appName
$ sudo yum erase appName

$ sudo apt update 
$ sudo apt upgrade
$ sudo yum update 

$ sudo apt show appName
$ sudo yum info appName

$ curl downloadLink        [curl https://www.baeldung.com/] {curl show output in console}
$ wget downloadLink        [wget https://www.baeldung.com/] {wget download it into a file}

$ gzip myCompressFile

$ gunzip myfileName.gz

$ tar cvf mytarFile.tar myDestinyFile      [here cvf's c stand for create]
$ tar xvf mytarFile.tar                    [here xvf's x stand for extract]

$ dpkg -i some_deb_ubuntu_package.deb   [for install debian and ubuntu package file]
$ rpm -i some_centOs_alpine_rpm_package.rpm    [for install redhat package file]
$ dpkg -r some_deb_ubuntu_package.deb    [remove file]
$ rpm -e some_centOs_alpine_rpm_package.rpm   [remove file]

$ dpkg -l       [for ubuntu and debian]
$ rpm -qa       [for red hat centOS,alpine ]