Happy to help... -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ian Lists Sent: Wednesday, December 26, 2007 2:10 PM To: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list Cc: Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list Subject: Re: [rhelv5-list] Regular Expressions on RHEL 5
Thanks, it seems to be working now after I adjusted my grep query like you suggested. I am using bash on everything, and I don't think there has been to many changes from EL4 to EL5. Thanks again, Ian ----- "Kevin Collins [MindWorks]" <[EMAIL PROTECTED]> wrote: > Your regular expression is not very good: > > egrep -q '[Nn]ot\ [retrieving|Found]' > ^ > > You are quoting the string, so why are you escaping the space? > > egrep -q '[Nn]ot\ [retrieving|Found]' > ^^^^^^^^^^^^^^^^ > > This matches any of one the characters listed, NOT the strings > "retrieving" or "Found" - for that, you would want something like: > > egrep -q '[Nn]ot (retrieving|Found)' > > Third, you are telling the shell "if this command (egrep -q ...) > returns > a successful return code, then exit (&& exit). So, how do you know > what > the reurn code is? The "-q" tells egrep to print nothing, so you > would > not see any difference. > > Which shell are you using? Korn shell (ksh) changed between RHEL4 and > RHEL5 from pdksh to actual Korn shell... could be that pipelines have > slightly different behavior. > > Kevin > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Ian Lists > Sent: Wednesday, December 26, 2007 1:43 PM > To: [email protected] > Subject: [rhelv5-list] Regular Expressions on RHEL 5 > > I have a strange situation where a script that works on RHEL 4 and > Fedora 8 doesn't work with RHEL5. The piece of the script that is > failing is very simple, it's just a wget with grep. > wget -N --no-check-certificate https://myserver.net/file.txt 2>&1 > >/dev/null | egrep -q '[Nn]ot\ [retrieving|Found]' && exit > > It doesn't seem to care about matching the grep results on RHEL5, it > just always exits. The script should just continue on if it doesn't > get > a hit on the grep statement. Anyone have any suggestions? > > Thanks, > Ian > > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
