Mail Archives: cygwin/2007/02/22/04:26:40
Better now, but still something is missing
cygwin is under c:\cygwin
e.g. c:\cygwin\bin
There I see
\bin\gracebat.exe->/usr/grace/bin/xmgrace.exe
but also the same for /bin/xmgrace.exe
The script directory is c:\cygwin\mydir
so in the perl script
my $updir='..';
my $gracebat=$updir .'/usr/grace/bin/xmgrace ';
system("$gracebat ... -printfile $printfile....");
prints to the screen, not the file.
This looks right to me, since gracebat and xmgrace link to the SAME
executable, xmgrace.exe.
How can I get $gracebat to do whatit would do on linux, i.e.
write to a file(I tested this on linux and it works fine)
?
>
> > On Wed, 21 Feb 2007, moka wrote:
> >
> > > I do startxwin to open X and then do
> > > gracebat <parameters>
> > > this does what I want, namely produce a jpeg file
> > >
> > > Now if I try this for a perl script(run from X)
> > > system(gracebat <parameters>)
> > >
> > > i.e. the exact same line that produced the right result
> > > I get an error.
> > >
> > > I guess the reason is that I am using the activestate perl instead of
> the
> > > cygwin
> > > perl; anyway there were reasons for that, not sure if valid or not[the
> > reason
> > > was getting DBD::Oracle to work, which was a huge pain].
> > > So I guess "system" to perl is whatever system Activestate was installed
> > for,
> > > i.e. Windows.
> > > The question is:
> > > Is it possible to get around this?
> > > Can I tweak the system command so that it executes gracebat(but
> > > otherwise use Activestate, e.g. for Oracle DBI queries?
> >
> > As the package list shows (I don't have grace installed), gracebat is a
> > symlink. A Windows program like ActiveState Perl will not understand
> > Cygwin's symlinks (nor will it run a shell script, since it uses cmd as
> > its shell). The easiest thing you can do is invoke a Cygwin shell (bash,
> > sh, pdksh, etc) and let it run the command. That way, no matter what the
> > command is (an executable, or a symlink, or a shell script), the shell
> > will interpret it for you and invoke it properly.
> >
> > Be careful with quoting -- you may want to use the list form of
> > system()...
> > Igor
> > --
> > http://cs.nyu.edu/~pechtcha/
> > |\ _,,,---,,_ pechtcha AT cs DOT nyu DOT edu | igor AT watson DOT ibm DOT com
> > ZZZzz /,`.-'`' -. ;-;;,_ Igor Peshansky, Ph.D. (name changed!)
> > |,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski
> > '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
> >
> > Freedom is just another word for "nothing left to lose"... -- Janis
> Joplin
> >
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