I downloaded Postman for Linux (from https://www.getpostman.com/apps), unpacked .tar.gz file into ~/bin/postman
and then tried to execute ~/bin/postman/Postma
Yes, there is awesome simple bash script I found, which allows you to update the Postman Linux app, straight from the terminal, called postman-updater-linux.
Just install it using NPM:
npm install -g postman-updater-linux
Then check for updates:
sudo postman-updater check
Then install:
sudo postman-updater install
Or update:
sudo postman-updater update
All three last commands can be used with custom location by adding -l /your/custom/path
to end of this command.