Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uwm.edu!linac!midway!gsbsun!valley From: valley@gsbsun.uchicago.edu (Doug Dougherty) Newsgroups: comp.os.msdos.programmer Subject: Re: Sensing STDOUT redirection in C Keywords: STDOUT, Redirection, MSDOS Message-ID: <1991Apr16.145847.20316@midway.uchicago.edu> Date: 16 Apr 91 14:58:47 GMT References: Sender: news@midway.uchicago.edu (NewsMistress) Organization: University of Chicago Lines: 18 collinsa@p4.cs.man.ac.uk (Adrian Collins) writes: >I am currently writing a program for the PC using C. I need to be able >to sense whether STDOUT has been redirected on the command line. In the >case where the output has not been redirected the program opens a text >window and displays the info in that window, but if output redirection >was used I want the program to output to STDOUT as it should assume that >the output is to be sent to a file. >Does anybody know how to sense whether output redirection has been used >on the command line? isatty(1) (Works in Turbo C) -- (Another fine mess brought to you by valley@gsbsun.uchicago.edu)