Re: [ferret_users] what is ferret's limit to the full path name for a netCDF data set

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi all,
This turned out to be due to the issue of piping a script into Ferret - 
this is discussed in these messages:
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2004/msg00008.html
http://ferret.pmel.noaa.gov/Ferret/Mail_Archives/fu_2005/msg00790.html

The workaround for this is to either pass the script to Ferret using the 
-script startup option, which lets you send arguments to the script as 
an added bonus, or to pass the name of a "wrapper" script to Ferret 
which calls the desired script

So either

    ferret -script my_script_name.jnl [arguments]

or

    ferret < wrapper.jnl

where wrapper.jnl contains just a few commands, perhaps just the line:

     go my_script_name.jnl


Ansley Manke wrote:
> Hi Janeen,
> The length is 256 characters. This allows for long local path names 
> and also long DODS URL's. What version of Ferret are you running? What 
> is the path you are trying to open?  I created this directory and put 
> a dataset into it, for a path name around 256 characters, and opened 
> the data successfully.
>
> yes? sp mkdir local_files
> yes? sp mkdir datadir
>
> yes? sp mkdir 
> local_files/datadir/a234567890b234567890c234567890d234567890e234567890f234567890g234567890h234567890i234567890j234567890k234567890l234567890m234567890n234567890o234567890p234567890q23456789034567890r234567890s234567890t234567890u234567890v123456 
>
>
> yes? let abc = {1,2,3}
> yes? clobber/file=aa.nc abc
>
> yes? sp cp aa.nc 
> local_files/datadir/a234567890b234567890c234567890d234567890e234567890f234567890g234567890h234567890i234567890j234567890k234567890l234567890m234567890n234567890o234567890p234567890q23456789034567890r234567890s234567890t234567890u234567890v123456 
>
>
> yes? use 
> "./local_files/datadir/a234567890b234567890c234567890d234567890e234567890f234567890g234567890h234567890i234567890j234567890k234567890l234567890m234567890n234567890o234567890p234567890q23456789034567890r234567890s234567890t234567890u234567890v123456/aa.nc" 
>
>
> yes? show data
> yes? list abc
>
> Janeen wrote:
> > Hello,
> >
> > I'm trying to find how long a full path for a data set can be, before 
> > ferret can't handle it.
> >
> > For example, I know that a path of 126 characters is too long, but 92 
> > is still accepted.
> >
> > Anyone know what the actual number is?
> >
> > Janeen

--

~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~>   ~> 

Ansley Manke, NOAA/PMEL   ansley.b.manke@xxxxxxxx
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744