I am trying to test praat (5.3.16) on linux (ubuntu 14.04) command line by running the command below
/usr/bin/praat --open data/hello.wav data/hello.TextGrid
It opens the praat gui "Praat Object" and "Praat Picture" but they are both empty, the terminal does not have ">" indicating that praat is running but nothing is happening.
Please let me know how to execute praat on command line, thank you.
According to Praat's release notes, the --open switch on the command line was only introduced in version 6.0 (and still got a bugfix for multiple files in version 6.0.22):
6.0 (28 October 2015)
[...] Praat can now open files from the command line on all platforms. [...]
The version you mention is almost 7 years old (May 23, 2012), so if that's possible, you probably need to update to a more recent version to have all new features and bug fixes that were made since then.