gnu-linux-everything

#!/bin/bash

ipkgs_raw=$(apt list --installed 2>/dev/null) # the raw output from the apt command
ipkgs=() # finished array


# prepare $ipkgs
for ipkg_full in $ipkgs_raw # for every line that apt command returned
do
    # if the full line is NOT "Listing..."
    if [ "$ipkg_full" != "Listing..." ]; then

        # check if the full line contains a slash, because a slash means that the line is the package name, not data about the package
        if grep -q '/' <<< "$ipkg_full"; then
            # configure seperator to be a slash
            IFS='/'

            # split the line
            read -a ipkg <<< "$ipkg_full"

            # add item to finished array
            ipkgs+=("${ipkg[0]}")
        fi
    fi
done

# display the start of the message
echo -n "I'd like to interject for a moment. If you're refering my computer's OS as GNU/Linux, you are incorrect. The OS that my computer runs is in fact, "

# for every item in the packages array that we added to earlier
for i in "${ipkgs[@]}" 
do
    echo -n "$i/" # print the package with a / at the end
done

printf "GNU/Linux.\n\n" # print the rest of the message

echo "GNU/Linux is not the OS that my computer runs by itself, but rather another free component of a fully functioning computer made useful by the packages that I install from dpkg, apt, and raw executables, comprising a full OS that can do my daily tasks."
echo
echo "Many computers run a modified version of the GNU/Linux OS every day, without realizing it. Through a peculiar turn of events, a GNU/Linux system with all it's packages is often called GNU/Linux, and many of it's users are not aware that it is basically a package library with an operating system underneath."
echo
echo -n "There really is a GNU/Linux, and these people are using it, but it is just a part of the system they use. GNU/Linux is the OS: The kernel and basic system utilities including package managers, which allow software that you use everyday to be installed. "
echo -n "The OS is an essential part of a workstation, embedded device, or gaming computer, but almost useless by itself; it can only be used for daily tasks in the context of other packages. GNU/Linux is normally used in combination with software that allow the system to be used for daily tasks: "
echo "the whole computer is basically GNU/Linux with packages added. So all the so-called GNU/Linux distributions are really distributions of GNU/Linux with packages added on!"

exit 0 # exit with return code of zero, meaning success