Backticks worked for me (tho I actually used qx{}). Some filtering (with grep) was needed because my .bashrc outputs some other messages, and -i to force an interactive shell. You can't use sh as that doesn't read .bashrc. 
print grep /^alias/, qx{/bin/bash -ic alias};
__END__
alias e='emacs'
alias grep='grep --colour=auto'
#etc

[download]

but that's only going to list the aliases defined by sourcing .bashrc, not the aliases in effect when the script was called. You can decide whether that's important or not.

Unless I state otherwise, my code all runs with strict and warnings

In reply to Re: getting a list of your bash aliases by FunkyMonk
in thread getting a list of your bash aliases by zentara

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.