Hello, I have a piece of bash code I'm using to list all running db instances on logon to server. It runs quite slowly, annoyingly delaying logon. I need to grep uncommented lines, get first column and alphabetically sort it, this is core of the command:

grep '^[A-Z]' /var/opt/oracle/oratab | awk -F: '{print $1}' | sort

I was thinking about using perl oneliner but I am not really good with that and I am not even sure if it will run faster. Anyone would be willing to show me how? Is it even a good idea?

/edit: I should show what I started with:

perl -lane 'print if /^[A-Z]/;' /var/opt/oracle/oratab

This is to grep but now I need to add next step (awk) and I'm not sure what's the right syntax.

In reply to Parse a text file with oneliner by RenMcCourtey

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.