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Date: | Fri, 01 Oct 2004 21:58:18 +0200 |
From: | "Eli Zaretskii" <eliz AT gnu DOT org> |
Sender: | halo1 AT zahav DOT net DOT il |
To: | djgpp AT delorie DOT com |
Message-ID: | <01c4a7f1$Blat.v2.2.2$24f046e0@zahav.net.il> |
X-Mailer: | emacs 21.3.50 (via feedmail 8 I) and Blat ver 2.2.2 |
In-reply-to: | <cjjc4u$2r6$1@nsnmpen3-gest.nuria.telefonica-data.net> |
(rafael_no_spam_no_ AT geninfor DOT com) | |
Subject: | Re: system() return value if no program present |
References: | <cielml$fln$1 AT nsnmpen3-gest DOT nuria DOT telefonica-data DOT net> <01c49d67$Blat.v2.2.2$625a64a0 AT zahav DOT net DOT il> <42da7100 DOT 0409200424 DOT 59601f01 AT posting DOT google DOT com> <01c49f48$Blat.v2.2.2$03122900 AT zahav DOT net DOT il> <42da7100 DOT 0409210019 DOT 1af1c09d AT posting DOT google DOT com> <01c4a00c$Blat.v2.2.2$f8f56520 AT zahav DOT net DOT il> <cjjc4u$2r6$1 AT nsnmpen3-gest DOT nuria DOT telefonica-data DOT net> |
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> From: "=?windows-1252?Q?Rafael_Garc=EDa?=@unknown.addr" > <rafael_no_spam_no_ AT geninfor DOT com> > Date: Fri, 01 Oct 2004 12:37:33 +0200 > > I have found the same problem in another computer and I have found that > this only happens when an environment variable "SHELL" is defined. If I > undefined it, no interactive shell is launched. > > set SHELL= > - system("grep")=2 and works as expected > - system("notexist")=0 and works as expected ("not found") > - system("dir")=0 and works as expected > > set SHELL=cmd > - system("grep")=2 and works as expected > - system("notexist")=-1 and works as expected ("not found") > - system("dir")=-1 and it does nothing (why?) > > set SHELL=c:\wtsrv\system32\cmd.exe (correct path) > - system("grep")=2 and works as expected > - system("notexist") runs interactive shell and then returns 0 (why?) > (this was what begun my question) > - system("dir") runs interactive shell and then returns 0 (why?) It seems that in DJGPP v2.03, cmd.exe is not treated as a DOS shell, so `system' thinks it is a Unix-like shell. That's a bug, I think. Therefore, I suggest to set SHELL to command.com, not to cmd.exe. Do the problems go away in that case?
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