I have been trying grep and regular expresions, but my regex is not up to solving this particular problem.
What in particular did you try, and what didn't work? Effort demonstrated through posted code is generally taken as a sign of good faith.

It's fairly simple to test for the existence of a particular string, say cups-1.5.2-9.fc16.x86_64, but what is your intended behavior when the version number changes? My solution might look something like

perl -e '@arr=`rpm -qa`; if (grep /^cups-\d/, @arr) {print grep /^cups +-\d/, @arr} elsif (grep /^cups-/, @arr) {print "Empty set\n"}'

Expanding it to handle other leading strings would be easy, though in the general case you may want to escape the string, e.g. /^\Q$name\E-\d/


#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.


In reply to Re: Need to return the first occurance of a search by kennethk
in thread Need to return the first occurance of a search by mds

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.