Monks, I've been struggling with a particular segment of my 300-line program I've been writing. I've added a remove function from <> to pass the string to the interpreter, I tell Perl to have a look at a file to find this string. If it exists the ENTIRE line that held that string will be deleted.

Should I use: 
if ($remove eq ~ m/^.*\b($remove)\b.*$) {
 # do stuff here
}

[download]
OR: 
sub clean_the_file {
    my $sourcefile = "/u/ccsys/CC_print.printers";

# grab the sourcefile and the string to remove as the first and second
+ arguments
    my ( $sourcefile, $remove ) = @_;

    # create a temporary file
    my $tempfile = # Some random file creation logic;

    # extract lines from $sourcefile which do NOT have the string to r
+emove
    # note that the \' inserts ticks so that strings with spaces can w
+ork, too
    `grep -v \'$remove\' $sourcefile\n > $tempfile`;

    # delete source file, then rename working file
    unlink($sourcefile);
    rename( $tempfile, $sourcefile );
}

[download]
Obviously the second logic makes a bit more sense; considering I'm not editing a live file, IF: the second logic should be used, how would I go about generating a random filename?

In reply to Pattern matching || grep -v which logic is better? by misconfiguration

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.