topic Re: Will a DCREATE'd folder under WORK be removed when the session ends? in SAS Programming

Will a DCREATE'd folder under WORK be removed when the session ends?

RichardAD — Mon, 27 Jan 2025 18:42:02 GMT

I've done the following on my own system without seeming problems. I can't recall when I verified it. Similar code is going to be to run in a server environment and I don't have access to system commands to verify.

/* set up a temporary (work) folder isolated from the main work folder */

%let path = %sysfunc(DCREATE(isolate,%sysfunc(pathname(WORK)))) ;
%let isolate = %sysfunc(pathname(WORK))/isolate ;  /* dont use &path in case code is rerun in session... */

libname ISOLATE "&isolate" ;

/* create stuff in ISOLATE ;
 * create stuff in WORK ;
 * compare, contrast and twiddle data betwixt the two ;
 */

libname ISOLATE ;

Will SAS remove the .../isolate sub-folder as well as every file in the then work folder?

Re: Will a DCREATE'd folder under WORK be removed when the session ends?

PaigeMiller — Mon, 27 Jan 2025 19:15:24 GMT

I don't really know the answer, but YOU could try it yourself and find out the answer in seconds! Please let us all know what the answer is.

Maxim 4: If in doubt, do a test run and look at the results.

Re: Will a DCREATE'd folder under WORK be removed when the session ends?

Tom — Mon, 27 Jan 2025 19:07:01 GMT

In general yes. At least it has in every installation I have used.

You could try it yourself. Run your program, make sure the actual path is printed into the SAS log, and then check if the folder is gone after the job ends.

Note there is a SAS option to disable the automatic removal of the WORK directory. So make sure you don't have that option set.

Re: Will a DCREATE'd folder under WORK be removed when the session ends?

SASKiwi — Mon, 27 Jan 2025 19:09:50 GMT

It did for me with a manually-created folder done via Windows Explorer. I don't think a DCREATE'd folder would behave any differently.

Re: Will a DCREATE'd folder under WORK be removed when the session ends?

Patrick — Mon, 27 Jan 2025 21:44:22 GMT

I've used this approach in various environments over the years and never observed any issues. Based on experience I'd say that when SAS terminates a session it always removes the work folder and all its content irrespective of its content.

Re: Will a DCREATE'd folder under WORK be removed when the session ends?

ChrisHemedinger — Tue, 28 Jan 2025 16:13:43 GMT

I rely on this behavior all of the time when I use DLCREATDIR and LIBNAME to make temp folders, like this:

options dlcreatedir; %let repopath=%sysfunc(getoption(WORK))/wordle-sas; libname repo "&repopath."; data _null_; rc = gitfn_clone( "https://github.com/sascommunities/wordle-sas", "&repoPath." ); put 'Git repo cloned ' rc=; run; %include "&repopath./wordle-sas.sas"; /* start a game and submit first guess */ %startGame; %guess(adieu);

One cool thing about this technique is that you can use a concatenated LIBNAME to create multiple folders.

options dlcreatedir; %let outdir=%sysfunc(getoption(WORK)); libname res ("&outdir./results", "&outdir./results/images"); libname res clear;

Re: Will a DCREATE'd folder under WORK be removed when the session ends?

RichardAD — Tue, 28 Jan 2025 22:35:45 GMT

I'm running code in a balanced server environment, so different SAS sessions can end up on different hosts and becomes more time consuming.