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Re: st: using pwd in an if statement
The package -fastcd- on SSC has a utility called -c- designed for just this
sort of issue. It allows you to set up a set of associations between
directory and mnemonics-- such as "hannah" for "C:\data\scholar\Hannah",
and so on. Then you can type "c hannah" and you will be switched to that
directory.
The package name is fastcd; once you install the package, note that you
have to type
. help fastcd
for help. The command, howver, is "c". This is a side effect of me naming
the command a single letter--something Stata advises against. Stata has
subsequently taken back "help c" to point to help on the c() macros.
--Nick Winter
At 03:49 PM 5/16/2006, you wrote:
If I am in a directory, say C:data\scholar\Hannah, and I type
-cd Hannah-
I get an error message, as one might expect.
I am just learning to use .do files for the bulk of my analyses and data
manipulations, a la Svend Juul's great book. I usually try to -cd- to the
relevant project directory somewhere near the begining of a .do file, then
open the data file.
But if I am *already in* that directory when I run the .do file, Stata
gives the same sort of error:
cd Hannah
unable to change to Hannah
r(170);
end of do-file
Is there a way to cd on a conditional basis, such as "if I'm not already
in the Hannah directory, then change to it"? Would this require using
something like
if c(pwd) !=
Since all of my project files are nested under a single directory for
research projects, I suppose I could always put in my do-files a -cd- to
that directory before the -cd- to the particular project directory.
--
Christopher W. Ryan, MD
SUNY Upstate Medical University Clinical Campus at Binghamton
and Wilson Family Practice Residency, Johnson City, NY
cryanatbinghamtondotedu
GnuPG and PGP public keys available at http://pgp.mit.edu
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--------------------------------------------------------
Nicholas Winter 607.255.8819 t
Assistant Professor 607.255.4530 f
Department of Government [email protected] e
308 White Hall falcon.arts.cornell.edu/nw53 w
Cornell University
Ithaca, NY 14853-4601
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* http://www.ats.ucla.edu/stat/stata/
