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copied!<p>The problem is in the commands you're actually using, which are not the same as the commands you've shown us. Evidence: in Perl, the first two command-line arguments are <code>$ARGV[0]</code> and <code>$ARGV[1]</code> (the command name is <code>$0</code>). The Perl script you showed us wouldn't produce the output you showed us.</p> <p>"No match" is a shell error message.</p> <p>Copy-and-paste (don't re-type) the <em>exact</em> contents of your Python script, the <em>exact</em> command line you used to invoke it, and the <em>exact</em> output you got.</p> <p>Some more things to watch out for:</p> <p>You're invoking the script as <code>a.py</code>, which implies either that you're copying it to some directory in your <code>$PATH</code>, or that <code>.</code> is in your <code>$PATH</code>. If the latter, that's a bad idea; consider what happens if you <code>cd</code> info a directory that contains a (possibly malicious) command called <code>ls</code>. Putting <code>.</code> at the end of your <code>$PATH</code> is safer than putting it at the beginning, but I still recommend leaving it out altogether and using <code>./command</code> to invoke commands in the current directory. In any case, for purposes of this exercise, please use <code>./a.py</code> rather than <code>a.py</code>, just so we can be sure you're not picking up another <code>a.py</code> from elsewhere in your <code>$PATH</code>.</p> <p>This is a long shot, but check whether you have any files in your current directory with a <code>*</code> character in their names. <code>some_command asd*123</code> (without quotation marks) will fail if there are no matching files, but not if there happens to be a file whose name is literally <code>"asd*123"</code>.</p> <p>Another thing to try: change your Python script as follows:</p> <pre><code>#!/usr/bin/env python print "before import sys" import sys print "after import sys" username = sys.argv[1] password = sys.argv[2] </code></pre> <p>This will tell you whether the shell is invoking your script at all.</p>

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