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Re: st: Calling Linux's "cat" command using -shell- in Stata MP 12


From   Richard Herron <richard.c.herron@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Calling Linux's "cat" command using -shell- in Stata MP 12
Date   Tue, 5 Jun 2012 14:40:12 -0400

You're correct, Phil. That does it! Thanks!

Richard Herron


On Tue, Jun 5, 2012 at 2:52 AM, Phil Clayton
<philclayton@internode.on.net> wrote:
>
> I haven't got my Linux installation in front of me but on the Mac each -shell- command runs independently, starting its own session - so the "cd" from the first command won't apply to the second command.
>
> Try something this instead:
>
> * begin code
> shell cd ~/data/txt/board_ownership; cat *_2.txt > board_ownership.txt
> * end code
>
> Phil
>
> On 05/06/2012, at 4:30 AM, Richard Herron wrote:
>
> > I am trying to use -shell- in Stata MP 12 to call "cat" in Linux to
> > concatenate a directory of 800 tab-delimited text files. The
> > tab-delimited text files all end in _2.txt and should match the wild
> > card *_2.txt. I tried two variants, which both fail. First I tried:
> >
> > * begin code
> > shell cd ~/data/txt/board_ownership
> > shell cat *_2.txt > board_ownership.txt
> > * end code
> >
> > which fails with "cat: *_2.txt: No such file or directory". However,
> > in the Stata console, if I -shell- to get the command prompt, then I
> > can successfully issue the "cd" and "cat" commands. I get the same
> > result if I replace the wild card * with an existing file.
> >
> > Second I tried
> >
> > * begin code
> > shell cat "~/data/txt/board_ownership/*_2.txt" >
> > "~/data/txt/board_ownership/board_ownership.txt"
> > * end code
> >
> > which fails with "/bin/bash:
> > ~/data/txt/board_ownership/board_ownership.txt: No such file or
> > directory"
> >
> > Can I automate this from within Stata? Or is this best done explicitly
> > in the command line?
> >
> > Thanks!
> >
> > Richard Herron
> > *
> > *   For searches and help try:
> > *   http://www.stata.com/help.cgi?search
> > *   http://www.stata.com/support/statalist/faq
> > *   http://www.ats.ucla.edu/stat/stata/
>
>
> *
> *   For searches and help try:
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> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

*
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