[Info-vax] DCL: Restrictions to READ loop process?

[Jan-Erik Söderholm]

JF Mezei wrote:
> Robb wrote:
> 
>> Adding SET VERIFY like JF Mezei recommended, I see that the process
>> errors out if the file I'm asking it to copy doesn't exist.
> 
> You can add:
> 
> $ON ERROR THEN GOTO label
> 
> Before a command you suspect could generate errors.
> 
> The "ON" command is not permanent. Once it has been triggfered by an
> error, you need to re-issue the command.
> 
> Another possibility is $SET NOON which causes the DCL file to continue
> executing even if it encounters errors.

And the *best* solution is of course to make sure that the COPY
command never generates any error, as far as it is possible. In
this case it's simply a case of using F$SEARCH on the file and
not try the COPY command att all if the file isn't there...