ot, bash programming question

[Tyler Spivey]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

I'm not quite sure what you're asking, maybe this is it.
True returns 0 by default, so you can just do:
if true;then
echo it succeeded
fi
But from your example script, maybe you wanted:
if ! true;then
echo it failed
fi


On 3/28/2012 11:45 PM, Gregory Nowak wrote:
> Hi folks,
> 
> apologies for the off topic post, but I'm hoping someone can answer
> my question.
> 
> In a bash script, how do you deal with a program returning 0 in an
> if statement? Here's a script to illustrate what I mean
> 
> #!/bin/sh if [ `/bin/true || echo $?` = 1 ] ; then echo "returned
> 1" fi
> 
> When I run this, I should just get the bash prompt back. When I run
> it though, I get:
> 
> [: 4: =: unexpected operator
> 
> followed by the prompt. I understand this happens because true
> exits with 0 status, and it isn't echoed back, so the if statement
> compares nothing to 1. What I'd like to know is how to get around
> that? Thanks in advance.
> 
> Greg
> 
> 
> _______________________________________________ Speakup mailing
> list Speakup at braille.uwo.ca 
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQIcBAEBCgAGBQJPdA40AAoJEPb0SlyudCqvnMkQAJGHpEMH0pBMWp9Lo3aW52h2
kOG/xS3Ix//9W75WmYHDmKGitwW7srvTlOHNXVi5Y275GaVtpwxgGEnkJNfTvPyj
mlvEagFBOfBfWfreUGD3bAEYWodS5k/2MtQqVx8j9AGtylETq2UewBDshitEP3xP
0zeCmhJUbomm6XY2RZ8nkAoku6S59ax3SPdCadredym2ng1pRyyLCapd0SXGTRyE
w9WLShff0tgOCDYyo13fzJlJC81YDpWXSv4N4VZpqA/9kjehfTBhSB7mn6sTVPnB
R6tG49X0MPyAHnA/WVWZrIKVzMNLdxILxgt1LPaMBmBdgW0McYQqysYRar7H/qTw
cb9rm8ORPMtpku+4B43ZMt0hH2fNbilRAd5xhdqWD0kDVmdviNvDEJQRU7YUCLWA
n48Y6nkD482fAMrGeBDcVzi+NHP3SP5ZecLXQ8ijagJpXFfhrR9FK5btpQIzmrvQ
4PJZcHfnimbYBOWlvUVJSh7AwPIRG8Jqv1T8HUJS60qeCCWATT49tqHv4WgurxXN
cifWTZN8UzTCm2bBsiTqCSY/K2T4ISo8ySzMijabdj1WqJ1OXPceemG+o8OVOkR/
VIzm+dAFlVtbwKzuI/N/loxZUzM7K11EgKiI509PjUgsoffMpl/Zr3V4B52KacvH
RsL98yPEvfeBk0Id0fw1
=S3vJ
-----END PGP SIGNATURE-----