Hello, I'm new to Perl. I'm trying to modify Perl code that used fgrep to remove all lines containing "intron", however, it also removes all lines that contain "splice_region&intron" which I would like to keep. How do I modify the code so it only removes lines with “intron” but keeps the lines “splice_region&intron”? Here is the exact Perl code that I'm trying to change:  my $cmd101 = `sed 's/Failed_amplicons\\([^@]*\\)@.@.@.@.@.@/|\\1@\\t@\\t@\\t@\\t@\\t@\\t@\\t@\\t@\\t@\\t@\\t#|\\1/g' $TOTALpfile |fgrep -v intron | fgrep -v non-preferred_transcript > $TOTALffile`; print $cmd101; Any help would be greatly appreciated, Mila

In reply to remove lines with exact match only by MilaK

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.