.help osfn Feb86 language
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NAME
osfn -- convert an IRAF filename to a host system filename
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USAGE
string = osfn (vfn)
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PARAMETERS
.ls vfn  
The IRAF virtual filename to be translated into a host filename.
.le
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DESCRIPTION
\fIOsfn\fR is a string valued intrinsic function which takes an IRAF virtual
filename as input and returns the equivalent host system filename as output.
\fIOsfn\fR can only be called as a function.
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EXAMPLES
1. Print the host equivalent of the vfn "hlib$login.cl".

	cl> = osfn ("hlib$login.cl")

2. Compute a host filename for use as an argument to a foreign task
(see help \fItask\fR for more information on foreign tasks).

.nf
	cl> task $vdir = "$directory"	# VMS directory lister
	cl> vdir /size osfn("bin$")
.fi
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SEE ALSO
pathnames, task
.endhelp