[Coco] OS9 Script Error Handling or File Testing ?

[Jeff Teunissen]

No, that's not correct.

The syntax is more like:

if -w /dd/cmds
then
    cd /dd/cmds
    ar -x /path/to/proramarchive
else
    echo You don't have permission to install.
    ex
endif

However, that script fragment will not work because you can't use IF
to check whether a directory is writable with Shell+ -- you can check
that it's a directory, but -W is always false for directories because
it only works for regular files, not directories.


On Sat, Jun 27, 2020 at 7:22 PM <coco at jechar.ca> wrote:
>
> IS THIS CORRECT FOR EXAMPLE ?
>
> if -w /dd/cmds true  then cd /dd/cmds else echo "You do not have
> Permission to Install to this System" endif
> if -w /dd/cmds true  then ar2 -x proramarchive.ar else echo exit endif
>
> Would this also be correct
>
> if -w /dd/cmds true then
>     cd /dd/cmds
>     ar2 -x proramarchive.ar
> else
>     echo "You do not have Permission to Install to this System"
>     exit
> endif
>
> On 2020-06-27 12:11, Rick Ulland wrote:
> > shell 2.1 does what you want
> >
> > if *test* then *statements* else *statements* endif
> >
> > where test is
> > -y           one char from stderr y=TRUE n=FALSE
> > -f path   true if file exists
> > -r path   true if file exists readable
> > -w path   true if file exists writeable
> > -e path   true if file exists and is execable
> > -d path   true if file exists and is a directory
> >
> > Luck!
> >
> > -ricku
> > CoNect
> >
> >
> > On 6/27/20 10:58 AM, coco at jechar.ca wrote:
> >>
> >>  I want to make a script that will create some directorys and
> >>  then do other things in those directorys. The problem is that
> >>  maybe these directorys already exist causing the script to
> >>  end prematurely with ERROR 218.
> >>
> >>  I am running shell_21.
> >>
> >>  Is there any way to tell the script just ignore errors and go to
> >>  the next instruction anyway or is there a command or utility to
> >>  test for the existence of a directory and allowing for conditional
> >>  execution.
> >>
> >>  Charlie
> >>
>
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