PDF documentation don't show up in STATA 16 using Ubuntu 20.04.2 LTS

[lucas cavalcanti]

I just installed STATA 16 in my Ubuntu machine and everything is running well. However, when I need to access the help option of a command, STATA don't open the pdf documentation. When I click in "(View complete PDF manual entry)" the Ubuntu terminal prints the following message:

/usr/local/stata_pdf: 67: [[: not found

I cannot understand what this message means. How can I fix this issue and access the pdf documentation?

[Marek Kwiatkowski]

Put the following in the first line of the stata_pdf script:

#!/bin/bash

Otherwise, the script is executed by sh and not bash, and sh doesn't understand the double bracket used in line 67.