Re: bash null conditional

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 2009-03-30 at 19:57 +0100, Sharpe, Sam J wrote:
> 2009/3/30 Craig White <craigwhite@xxxxxxxxxxx>:
> > $ if [ -n $(grep A125 ARdebtorsmaster.csv) ]; then echo "null"; fi
> > null
> > $ if [ -n $(grep A121 ARdebtorsmaster.csv) ]; then echo "null"; fi
> > bash: [: too many arguments
> >
> > and then of course, light bulb goes off...I have to figure out how to
> > get a basic exit code from grep, but seemingly the -s and the -q aren't
> > the answer.
> 
> if [ `grep -c A125 ARdebtorsmaster.csv` -eq 0 ]; then echo "null"; fi
> if [ `grep -c A121 ARdebtorsmaster.csv` -neq 0 ]; then echo "notnull"; fi
> 
> -c returns the count of the number of matches.
----
thanks...I figured that out about 2 minutes before you sent the reply
(see my other e-mail).

Craig

-- 
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [Fedora Magazine]     [Fedora News]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Maintainers]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Legacy]     [Fedora Desktop]     [Fedora Fonts]     [ATA RAID]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [SSH]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Centos]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Tux]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Asterisk PBX]     [Fedora Sparc]     [Fedora Universal Network Connector]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux