topic stdin stdout in SAS Procedures

stdin stdout

siri2020 — Wed, 22 Jul 2015 09:35:55 GMT

I'm trying to submit this code

data _null_;

file stdout;

infile stdin;

put @5 "input x?:";

input x;

run;

And this is what I get

********/********/********/******> input x?:

ksh: 3: not found

[11] + Stopped (SIGTTIN) sas test1.sas &

Can't figure out where I'm going wrong?

Re: stdin stdout

RW9 — Wed, 22 Jul 2015 12:00:16 GMT

What is stdout and stdin defined as? There should be filerefs:

fileref stdin "c:\abcd.txt";

...

Next, why are you tring to put a string ""? Do you want to read from stdin and write to stdout? If so:

fileref stdin "c:\abc.txt";

fileref stdout "c:\def.txt";

data _null_;

file stdout;

infile stdin;

input x $;

put @5 x;

run;

Re: stdin stdout

siri2020 — Fri, 24 Jul 2015 06:39:18 GMT

I want this to be an interactive SAS program. That is, ask the user a question, take in the answer and output accordingly. Hence the string.

Re: stdin stdout

RW9 — Fri, 24 Jul 2015 11:51:44 GMT

Base SAS doesn't have any particularly good wasy of getting user input, you could look at prco window, or there is this (haven't used it myself):

http://support.sas.com/documentation/cdl/en/proc/65145/HTML/default/viewer.htm#p0fy35488gnc66n1sezjgcs77pcp.htm

Re: stdin stdout

Tom — Fri, 24 Jul 2015 12:18:39 GMT

Run SAS interactively and use the WINDOW or %WINDOW command to prompt users.

Re: stdin stdout

data_null__ — Fri, 24 Jul 2015 13:05:16 GMT

Perhaps you are not a UNIX user.

Filerefs Assigned by SAS in UNIX Environments

Re: stdin stdout

siri2020 — Tue, 28 Jul 2015 07:56:28 GMT

I'm very new to UNIX

I don't think %window or window will work with SAS in UNIX.

data _null_;

file stdout;

infile stdin;

put @5 "Do you want to print and email the tracker(Y/N)?:";

input ans;

I need help with this. Will this work in UNIX?

Re: stdin stdout

Tom — Tue, 28 Jul 2015 10:25:54 GMT

Works for me. I would separate the writing and the reading as two steps to eliminate any timing issues.

data _null_;

file stdout;

put "Do you want to print and email the tracker(Y/N)?:";

run;

data _null_;

infile stdin;

input ans $ ;

put ans= ;

stop;

run;

Do you want to print and email the tracker(Y/N)?:

Re: stdin stdout

Tom — Tue, 28 Jul 2015 10:46:04 GMT

How is the SAS program going to read from STDIN when you have pushed the program into the background by adding & to command line?

Re: stdin stdout

Kurt_Bremser — Tue, 28 Jul 2015 11:06:38 GMT

If you already run this from the commandline (batch mode), I'd suggest to handle the input in a shell script (with the read command) and supply the values to the SAS program via environment variables or the -sysparm commandline option (SAS(R) 9.2 Macro Language: Reference).

Base SAS is not really good at being interactive.