You probably need something like command you want to test if [$? eq 0] then ... fi Sorry i'm not good at shell scripting but $? holds the exit status and eq 0 tests if it is equal to 0. You can also do command &&command 2 && command 3 to run command 2 if command 1 succeeds, then command 3 if command 2 succeeds. command ||other command will run command and if it fails run other command Regards, Kerry. On 29/03/2012 2:45 PM, Gregory Nowak wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > 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 > > > - -- > web site: http://www.romuald.net.eu.org > gpg public key: http://www.romuald.net.eu.org/pubkey.asc > skype: gregn1 > (authorization required, add me to your contacts list first) > > - -- > Free domains: http://www.eu.org/ or mail dns-manager at EU.org > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > > iEYEARECAAYFAk90BP0ACgkQ7s9z/XlyUyCQGACgxxLgwZEYcu5pvsscH4wVpBTH > JrQAnAyQjTipfY5mHCExzyq552b7n8Fc > =FT/Z > -----END PGP SIGNATURE----- > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup >
