[sph]

What a silly post. I use argv[0] in my host-spawn tool (https://github.com/1player/host-spawn) so one can symlink it to a name inside a container and when you run it, it's executed on the host.

    # Inside your container:

    $ flatpak --version
    zsh: command not found: flatpak

    # Have host-spawn handle any flatpak command
    $ ln -s /usr/local/bin/host-spawn /usr/local/bin/flatpak

    # Now flatpak will always be executed on the host
    $ flatpak --version
    Flatpak 1.12.7

I am able to tell the symlink name by reading argv[0] to know which command to run. It is such a powerful and neat UNIX trick that has no simple alternative (in this example one would have to write ad-hoc shell scripts for each command they want to run)

[4star3star]

The post is silly because you wrote software that makes use of argv[0]? On the contrary, it opens a discussion about unintended security implications that might be avoided in the future if command line implementation can be reconsidered.