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
To do the same I did following in terminal-
$ wget https://dl.pstmn.io/download/latest/linux64 -O postman.tar.gz
$ sudo tar -xzf postman.tar.gz -C /opt
$ rm postman.tar.gz
$ sudo ln -s /opt/Postman/Postman /usr/bin/postman
/usr/bin/
and search form "Postman"Hope will hell others too.