Show details on installed gnu radio
-h [ --help ]
print help message
--prefix
print gnuradio installation prefix
--sysconfdir
print gnuradio system configuration directory
--prefsdir
print gnuradio preferences directory
--builddate
print gnuradio build date (RFC2822 format)
-v [ --version ]
print gnuradio version
The full documentation for GNU Radio is in HTML format. If the gnuradio-doc package is properly installed at your site
/usr/share/doc/gnuradio-doc/html/
should give you access to the complete manual.