I had a launcher for firefox with command TZ=UTC firefox. Suddenly it stopped working, I think after I did pacman -Syu (I only clicked again much later so it could be something else). I am using arch linux and mate.

I also tested trying to open other applications with TZ=UTC prefixed and it didn't work, so doesn't seem like a firefox issue.

When I click the launcher nothing happens. If I type the command of the launcher in the terminal it works. How can I further investigate what's happening / fix this?

  • 1
    What happens if you replace TZ=UTC with env TZ=UTC?
    – Bob
    Jun 21, 2019 at 12:23
  • @Bob that worked. Jun 21, 2019 at 12:27

1 Answer 1


Replace TZ=UTC with env TZ=UTC. TZ=UTC is bash (POSIX shell) syntax. env, on another hand, is a program in itself. This is why when you run the command in terminal it works. You can find more info in the env manual page.

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