Hi perlmonks, I need a help from you , I am trying to read and write(not append) a file concurrently using perl. I used the command open FILE,"+< file name" or die $!; and sysopen with O_RDWR option . the commands doing the correct thing , but what i need to is to write not append to the file . for example in file i have a word " hello how are you ". when i used the open or sysopen command with (print <handle> "fine how about you"; ) value "fine how about you " its appending the new value to the file. like " hi how are you fine how about you" . is there a way to write(not append) to a file while it was opened. there might be a way to do this , but i could not able to find that , please help me .

In reply to Read and write files concurrently in Perl by sselva

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.