f2c --version (return code: 0)
f2c (Fortran to C Translator) version 20100827.
f2c --help (return code: 0)
f2c (Fortran to C Translator) version 20100827.
Usage: f2c [ option ... ] [file ...]
For usage details, see the man page, f2c.1.
For technical details, see the f2c report.
Both are available from netlib, e.g.,
http://netlib.bell-labs.com/netlib/f2c/f2c.1.gz
http://netlib.bell-labs.com/netlib/f2c/f2c.pdf
or
http://www.netlib.org/f2c/f2c.1
http://www.netlib.org/f2c/f2c.pdf