/usr/bin/syrthes-gui is in syrthes-gui 4.3.0-dfsg1-2build1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 | #!/bin/sh
. /usr/lib/syrthes/bin/syrthes.profile >/dev/null
exec /usr/bin/python /usr/share/syrthes-gui/SyrthesMain.pyc "$@"
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