Re: fileexist(f)

[Petr M. <mi...@ph...>]

> Here's another.  The new function does not recognize pipes

The routine fileexist() is for files only; it makes no sense for pipes.
For pipes, do
 	if (fileexist('a.dat')) plot '<tr . , a.dat'

> gnuplot> !printenv GNUPLOT_LIB

It looks for the file in the current directory by default.

> was a clever idea to use GNUPLOT_LIB to point to any one of
> several data directories:

Then, there is a need for function (taking the name from Octave)
 	file_in_loadpath(name)

We can add it.

=> return the absolute path/name for the given file anywhere along the 
loadpath.

Then, you could use either of
 	if (fileexist(f))
 	if (fileexist(file_in_loadpath(f)))

> Anyhow, is there anysystem that provides "ls" that does not also
> provide "find"?

On OS/2 and Windows
   - there is no "ls" by default
   - there is "find", but with completely different syntax from GNU find

> if (defined(VAR))

Thanks, that I was looking for (in Octave & Matlab, it's called exist()).

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PM