Skip,
If type just the names of the verbs, J will display their definitions:
spawn
spawn_jtask_
shell
shell_jtask_
So, the versions without the _jtask_ are basically 'aliases' of the _jtask_
versions.
shell_jtask_
''&$: :(spawn ('cmd /c ' , ]))
I am surprised that you get different results from shell and spawn in this
case.
I just ran a similar test as you ran:
g
C:\gnuwin32\bin\gzip.exe -d -c
f
C:\Users\me\j64-701-user\temp\foo1.ijs.gz
qq=:shell g,f
rr=:spawn g,f
$qq
1605
$rr
1605
For me, shell and spawn got the same result.
What version of gzip are you running? Perhaps there are differences between
the
versions of gzip you and I have.
shell 'C:\gnuwin32\bin\gzip.exe -V'
gzip 1.3.12
Copyright (C) 2007 Free Software Foundation, Inc.
Copyright (C) 1993 Jean-loup Gailly.
This is free software. You may redistribute copies of it under the terms of
the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.
There is NO WARRANTY, to the extent permitted by law.
Written by Jean-loup Gailly.
--
David Mitchell
On 11/8/2011 2:16, Skip Cave wrote:
> Thanks Raul! Your hint allowed me to avoid using the overly verbose 7z.exe,
> and use gzip instead, which doesn't pollute the stout with completion text:
>
> filepth =: 'c:\Gzip\tsttxt.gz'
> zipth =: '"c:\Gzip\gzip.exe -d -c "'
> shell zipth, filepth
>
> This is a test file 1 2 3 4 5 6 7 8 9 0
> This is a test file 1 2 3 4 5 6 7 8 9 0
> This is a test file 1 2 3 4 5 6 7 .... etc.
> This is the contents of file tsttxt.txt file that printed out (with no
> extra text!)...
>
> Interestingly, the alternate 'spawn zipth, filepth' does not produce any
> stdout, so the shell command is definitely required.
>
> By the way, what is the difference between shell_jtask_ and shell? or
> spawn_jtask_ and spawn?
>
> Skip
>
>
> On Sat, Nov 5, 2011 at 8:01 AM, Raul Miller<rauldmil...@gmail.com> wrote:
>
>> Note that gzip also has an option to provide its result on stdout
>> instead of replacing the file
>>
>> http://www.mkssoftware.com/docs/man1/gzip.1.asp
>>
>> -c (or --stdout)
>>
>> --
>> Raul
>>
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