Show all installed packages or software in Linux all flavours...

Below mentioned command to get list of softwares and packages installed on linux operation system with all flavours -

First need to root access or sudo su with sudo access user -


Red Hat/Fedora Core/CentOS Linux
# rpm -qa | less

Core/CentOS Linux
# rpm -qa | less

Debian Linux
# dpkg --get-selections

Ubuntu Linux
# sudo dpkg --get-selections

FreeBSD
# pkg_info | less
# pkg_info apache

pkg_version command to summarises the versions of all installed packages
# pkg_version | less
# pkg_version | grep 'lsof'


OpenBSD
# pkg_info | less
# pkg_info apache

Thanks
DB Tech Solutions