Net::Cmd - Network Command class (as used by FTP, SMTP etc)

<!DOCTYPE html> <html lang="en-US"> <head> <title>Net::Cmd - Network Command class (as used by FTP, SMTP etc) - metacpan.org</title> <link rel="preload" as="fetch" href="/account/login_status" crossorigin="anonymous" /> <link href="/assets/style-XFEQ536G.css" rel="stylesheet" type="text/css"> <script src="/assets/main-WXBSEDQJ.js" type="module"></script> <link rel="alternate" type="application/rss+xml" title="Recent CPAN Uploads of libnet - MetaCPAN" href="/dist/libnet/releases.rss" /> <link rel="canonical" href="https://metacpan.org/pod/Net::Cmd" /> <meta name="description" content="Network Command class (as used by FTP, SMTP etc)" /> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5"> <link rel="shortcut icon" href="/static/icons/favicon.ico"> <link rel="apple-touch-icon" sizes="152x152" href="/static/icons/apple-touch-icon.png"> <link rel="search" href="/static/opensearch.xml" type="application/opensearchdescription+xml" title="MetaCPAN"> <script 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href="/dist/libnet">libnet</a> </li> <li> Module version: 3.15 </li> <li> <a data-keyboard-shortcut="g s" href="/dist/libnet/source/lib/Net/Cmd.pm">Source</a> (<a href="/dist/libnet/source/lib/Net/Cmd.pm?raw=1">raw</a>) </li> <li> <a data-keyboard-shortcut="g b" href="/dist/libnet/source/lib/Net">Browse</a> (<a href="/dist/libnet/source/lib/Net?raw=1">raw</a>) </li> <li> <a data-keyboard-shortcut="g c" href="/dist/libnet/changes">Changes</a> </li> <li> <a class="nopopup" href="/dist/libnet/contribute">How to Contribute</a> </li> <li> <a rel="noopener nofollow" data-keyboard-shortcut="g r" href="https://github.com/steve-m-hay/perl-libnet">Repository</a> </li> <li> <a rel="noopener nofollow" data-keyboard-shortcut="g i" href="https://rt.cpan.org/Public/Dist/Display.html?Name=libnet">Issues</a> (73) </li> <li> <a rel="noopener nofollow" href="http://matrix.cpantesters.org/?dist=libnet+3.15" title="Matrix">Testers</a> <span title="(pass / fail / na)">(<a rel="noopener nofollow" 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class="nav-header">Activity</li> <li> <div class="activity-graph"> <img src="/dist/libnet/activity.svg?res=month" /> <div class="comment">24 month</div> </div> </li> <li class="nav-header">Tools</li> <li> <a itemprop="downloadUrl" href="https://cpan.metacpan.org/authors/id/S/SH/SHAY/libnet-3.15.tar.gz"> Download (<span itemprop="fileSize">93.35KB</span>)</a> </li> <li> <a href="https://explorer.metacpan.org/?url=%2Fmodule%2FSHAY%2Flibnet-3.15%2Flib%2FNet%2FCmd.pm"> MetaCPAN Explorer </a> </li> <li> <a href="/dist/libnet/permissions"> Permissions </a> </li> <li> <a href="/dist/libnet/releases.rss"> Subscribe to distribution </a> </li> <li> <button class="btn btn-link" data-toggle="modal" data-target="#metacpan_install-instructions-dialog"> Install Instructions </button> </li> <li> <form action="/search"> <input type="hidden" name="q" value="dist:libnet"> <input type="search" name="q" placeholder="Search distribution" class="form-control tool-bar-form"> <input type="submit" style="display: none"> </form> </li> <li> <form action="https://grep.metacpan.org/search"> <input type="hidden" name="qd" value="libnet"> <input type="hidden" name="source" value="metacpan"> <input type="search" name="q" placeholder="grep distribution" class="form-control tool-bar-form"> <input type="submit" style="display: none"> </form> </li> <li class="version-jump"> <select class="select-navigator form-control tool-bar-form"> <option disabled selected>Jump to version</option> <option disabled value="/release/SHAY/libnet-3.15/view/lib/Net/Cmd.pm" >3.15 (SHAY on 2023-03-20)</option> <option value="/release/SHAY/libnet-3.14/view/lib/Net/Cmd.pm" >3.14 (SHAY on 2022-05-22)</option> <option value="/release/SHAY/libnet-3.13/view/lib/Net/Cmd.pm" >3.13 (SHAY on 2020-12-23)</option> <option value="/release/GBARR/libnet-1.22_01/view/lib/Net/Cmd.pm" >1.22_01 DEV (GBARR on 2010-05-31)</option> <option value="/release/GBARR/libnet-1.22/view/lib/Net/Cmd.pm" >1.22 (GBARR on 2007-08-26)</option> <optgroup label="BackPAN">' <option value="/release/SHAY/libnet-3.12/view/lib/Net/Cmd.pm" >3.12 (SHAY on 2020-12-09)</option> <option value="/release/SHAY/libnet-3.11/view/lib/Net/Cmd.pm" >3.11 (SHAY on 2017-11-14)</option> <option value="/release/SHAY/libnet-3.10/view/lib/Net/Cmd.pm" >3.10 (SHAY on 2016-08-01)</option> <option value="/release/SHAY/libnet-3.09/view/lib/Net/Cmd.pm" >3.09 (SHAY on 2016-07-19)</option> <option value="/release/SHAY/libnet-3.08/view/lib/Net/Cmd.pm" >3.08 (SHAY on 2016-01-05)</option> <option value="/release/SHAY/libnet-3.07/view/lib/Net/Cmd.pm" >3.07 (SHAY on 2015-07-17)</option> <option value="/release/SHAY/libnet-3.06/view/lib/Net/Cmd.pm" >3.06 (SHAY on 2015-04-01)</option> <option value="/release/SHAY/libnet-3.05/view/lib/Net/Cmd.pm" >3.05 (SHAY on 2015-01-13)</option> <option value="/release/SHAY/libnet-3.04/view/lib/Net/Cmd.pm" >3.04 (SHAY on 2014-11-29)</option> <option value="/release/SHAY/libnet-3.03/view/lib/Net/Cmd.pm" >3.03 (SHAY on 2014-11-28)</option> <option value="/release/SHAY/libnet-3.02/view/lib/Net/Cmd.pm" >3.02 (SHAY on 2014-10-10)</option> <option value="/release/SHAY/libnet-3.01/view/lib/Net/Cmd.pm" >3.01 (SHAY on 2014-10-09)</option> <option value="/release/SHAY/libnet-3.00/view/lib/Net/Cmd.pm" >3.00 (SHAY on 2014-10-09)</option> <option value="/release/SHAY/libnet-1.30/view/lib/Net/Cmd.pm" >1.30 (SHAY on 2014-10-08)</option> <option value="/release/SHAY/libnet-1.29/view/lib/Net/Cmd.pm" >1.29 (SHAY on 2014-10-08)</option> <option value="/release/SHAY/libnet-1.28/view/lib/Net/Cmd.pm" >1.28 (SHAY on 2014-10-08)</option> <option value="/release/SHAY/libnet-1.27/view/lib/Net/Cmd.pm" >1.27 (SHAY on 2014-05-30)</option> <option value="/release/SHAY/libnet-1.26/view/lib/Net/Cmd.pm" >1.26 (SHAY on 2014-05-30)</option> <option value="/release/SHAY/libnet-1.25/view/lib/Net/Cmd.pm" >1.25 (SHAY on 2014-02-04)</option> <option value="/release/SHAY/libnet-1.24/view/lib/Net/Cmd.pm" >1.24 (SHAY on 2014-01-06)</option> <option value="/release/SHAY/libnet-1.23/view/lib/Net/Cmd.pm" >1.23 (SHAY on 2013-08-12)</option> <option value="/release/SHAY/libnet-1.22_02/view/lib/Net/Cmd.pm" >1.22_02 DEV (SHAY on 2013-08-08)</option> <option value="/release/GBARR/libnet-1.21/view/lib/Net/Cmd.pm" >1.21 (GBARR on 2007-05-19)</option> <option value="/release/GBARR/libnet-1.20/view/lib/Net/Cmd.pm" >1.20 (GBARR on 2007-02-03)</option> <option value="/release/GBARR/libnet-1.19/view/lib/Net/Cmd.pm" >1.19 (GBARR on 2004-06-30)</option> <option value="/release/GBARR/libnet-1.18/view/lib/Net/Cmd.pm" >1.18 (GBARR on 2004-03-22)</option> <option value="/release/GBARR/libnet-1.17/view/lib/Net/Cmd.pm" >1.17 (GBARR on 2003-09-25)</option> <option value="/release/GBARR/libnet-1.16/view/lib/Net/Cmd.pm" >1.16 (GBARR on 2003-06-18)</option> <option value="/release/GBARR/libnet-1.15/view/lib/Net/Cmd.pm" >1.15 (GBARR on 2003-06-13)</option> <option value="/release/GBARR/libnet-1.14/view/lib/Net/Cmd.pm" >1.14 (GBARR on 2003-06-02)</option> <option value="/release/GBARR/libnet-1.13/view/lib/Net/Cmd.pm" >1.13 (GBARR on 2003-03-03)</option> <option value="/release/GBARR/libnet-1.12/view/lib/Net/Cmd.pm" >1.12 (GBARR on 2002-05-28)</option> <option value="/release/GBARR/libnet-1.11/view/lib/Net/Cmd.pm" >1.11 (GBARR on 2002-04-02)</option> <option value="/release/GBARR/libnet-1.10/view/lib/Net/Cmd.pm" >1.10 (GBARR on 2002-02-28)</option> <option value="/release/GBARR/libnet-1.0901/view/lib/Net/Cmd.pm" >1.0901 (GBARR on 2001-12-10)</option> <option value="/release/GBARR/libnet-1.09/view/lib/Net/Cmd.pm" >1.09 (GBARR on 2001-11-02)</option> <option value="/release/GBARR/libnet-1.08/view/lib/Net/Cmd.pm" >1.08 (GBARR on 2001-10-29)</option> <option value="/release/GBARR/libnet-1.0704/view/lib/Net/Cmd.pm" >1.0704 (GBARR on 2001-08-17)</option> <option value="/release/GBARR/libnet-1.0703/view/lib/Net/Cmd.pm" >1.0703 (GBARR on 2000-03-23)</option> <option value="/release/GBARR/libnet-1.0702/view/lib/Net/Cmd.pm" >1.0702 (GBARR on 2000-03-13)</option> <option value="/release/GBARR/libnet-1.0701/view/lib/Net/Cmd.pm" >1.0701 (GBARR on 2000-03-07)</option> <option value="/release/GBARR/libnet-1.07/view/lib/Net/Cmd.pm" >1.07 (GBARR on 2000-03-06)</option> <option value="/release/GBARR/libnet-1.0607/view/lib/Net/Cmd.pm" >1.0607 (GBARR on 1999-09-18)</option> <option value="/release/GBARR/libnet-1.0606/view/lib/Net/Cmd.pm" >1.0606 (GBARR on 1998-12-11)</option> <option value="/release/GBARR/libnet-1.0605/view/lib/Net/Cmd.pm" >1.0605 (GBARR on 1997-12-21)</option> <option value="/release/GBARR/libnet-1.0604/view/lib/Net/Cmd.pm" >1.0604 (GBARR on 1997-12-12)</option> <option value="/release/GBARR/libnet-1.0603/view/lib/Net/Cmd.pm" >1.0603 (GBARR on 1997-11-26)</option> <option value="/release/GBARR/libnet-1.0602/view/lib/Net/Cmd.pm" >1.0602 (GBARR on 1997-11-18)</option> <option value="/release/GBARR/libnet-1.0601/view/lib/Net/Cmd.pm" >1.0601 (GBARR on 1997-11-05)</option> <option value="/release/GBARR/libnet-1.06/view/lib/Net/Cmd.pm" >1.06 (GBARR on 1997-11-01)</option> <option value="/release/GBARR/libnet-1.0506/view/lib/Net/Cmd.pm" >1.0506 (GBARR on 1997-10-13)</option> <option value="/release/GBARR/libnet-1.0505/view/lib/Net/Cmd.pm" >1.0505 (GBARR on 1997-05-28)</option> <option value="/release/GBARR/libnet-1.0504/view/lib/Net/Cmd.pm" >1.0504 (GBARR on 1997-05-27)</option> <option value="/release/GBARR/libnet-1.0503/view/lib/Net/Cmd.pm" >1.0503 (GBARR on 1997-05-21)</option> <option value="/release/GBARR/libnet-1.0502/view/lib/Net/Cmd.pm" >1.0502 (GBARR on 1997-04-03)</option> <option value="/release/GBARR/libnet-1.05_01/view/lib/Net/Cmd.pm" >1.05_01 DEV (GBARR on 1997-03-19)</option> <option value="/release/GBARR/libnet-1.05/view/lib/Net/Cmd.pm" >1.05 (GBARR on 1997-03-12)</option> <option value="/release/GBARR/libnet-1.04/view/lib/Net/Cmd.pm" >1.04 (GBARR on 1997-01-07)</option> <option value="/release/GBARR/libnet-1.03/view/lib/Net/Cmd.pm" >1.03 (GBARR on 1997-01-02)</option> <option value="/release/GBARR/libnet-1.02/view/lib/Net/Cmd.pm" >1.02 (GBARR on 1996-12-23)</option> <option value="/release/GBARR/libnet-1.01/view/lib/Net/Cmd.pm" >1.01 (GBARR on 1996-09-05)</option> <option value="/release/GBARR/libnet-1.00/view/lib/Net/Cmd.pm" >1.00 (GBARR on 1996-06-24)</option> </optgroup> </select> </li> <li class="version-diff"> <select class="select-navigator form-control tool-bar-form"> <option disabled selected>Diff with version</option> <option disabled value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.15/lib/Net/Cmd.pm" >3.15 (SHAY on 2023-03-20)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.14/lib/Net/Cmd.pm" >3.14 (SHAY on 2022-05-22)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.13/lib/Net/Cmd.pm" >3.13 (SHAY on 2020-12-23)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.22_01/lib/Net/Cmd.pm" >1.22_01 DEV (GBARR on 2010-05-31)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.22/lib/Net/Cmd.pm" >1.22 (GBARR on 2007-08-26)</option> <optgroup label="BackPAN">' <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.12/lib/Net/Cmd.pm" >3.12 (SHAY on 2020-12-09)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.11/lib/Net/Cmd.pm" >3.11 (SHAY on 2017-11-14)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.10/lib/Net/Cmd.pm" >3.10 (SHAY on 2016-08-01)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.09/lib/Net/Cmd.pm" >3.09 (SHAY on 2016-07-19)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.08/lib/Net/Cmd.pm" >3.08 (SHAY on 2016-01-05)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.07/lib/Net/Cmd.pm" >3.07 (SHAY on 2015-07-17)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.06/lib/Net/Cmd.pm" >3.06 (SHAY on 2015-04-01)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.05/lib/Net/Cmd.pm" >3.05 (SHAY on 2015-01-13)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.04/lib/Net/Cmd.pm" >3.04 (SHAY on 2014-11-29)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.03/lib/Net/Cmd.pm" >3.03 (SHAY on 2014-11-28)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.02/lib/Net/Cmd.pm" >3.02 (SHAY on 2014-10-10)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.01/lib/Net/Cmd.pm" >3.01 (SHAY on 2014-10-09)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-3.00/lib/Net/Cmd.pm" >3.00 (SHAY on 2014-10-09)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.30/lib/Net/Cmd.pm" >1.30 (SHAY on 2014-10-08)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.29/lib/Net/Cmd.pm" >1.29 (SHAY on 2014-10-08)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.28/lib/Net/Cmd.pm" >1.28 (SHAY on 2014-10-08)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.27/lib/Net/Cmd.pm" >1.27 (SHAY on 2014-05-30)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.26/lib/Net/Cmd.pm" >1.26 (SHAY on 2014-05-30)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.25/lib/Net/Cmd.pm" >1.25 (SHAY on 2014-02-04)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.24/lib/Net/Cmd.pm" >1.24 (SHAY on 2014-01-06)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.23/lib/Net/Cmd.pm" >1.23 (SHAY on 2013-08-12)</option> <option value="/release/SHAY/libnet-3.15/diff/SHAY/libnet-1.22_02/lib/Net/Cmd.pm" >1.22_02 DEV (SHAY on 2013-08-08)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.21/lib/Net/Cmd.pm" >1.21 (GBARR on 2007-05-19)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.20/lib/Net/Cmd.pm" >1.20 (GBARR on 2007-02-03)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.19/lib/Net/Cmd.pm" >1.19 (GBARR on 2004-06-30)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.18/lib/Net/Cmd.pm" >1.18 (GBARR on 2004-03-22)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.17/lib/Net/Cmd.pm" >1.17 (GBARR on 2003-09-25)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.16/lib/Net/Cmd.pm" >1.16 (GBARR on 2003-06-18)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.15/lib/Net/Cmd.pm" >1.15 (GBARR on 2003-06-13)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.14/lib/Net/Cmd.pm" >1.14 (GBARR on 2003-06-02)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.13/lib/Net/Cmd.pm" >1.13 (GBARR on 2003-03-03)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.12/lib/Net/Cmd.pm" >1.12 (GBARR on 2002-05-28)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.11/lib/Net/Cmd.pm" >1.11 (GBARR on 2002-04-02)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.10/lib/Net/Cmd.pm" >1.10 (GBARR on 2002-02-28)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0901/lib/Net/Cmd.pm" >1.0901 (GBARR on 2001-12-10)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.09/lib/Net/Cmd.pm" >1.09 (GBARR on 2001-11-02)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.08/lib/Net/Cmd.pm" >1.08 (GBARR on 2001-10-29)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0704/lib/Net/Cmd.pm" >1.0704 (GBARR on 2001-08-17)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0703/lib/Net/Cmd.pm" >1.0703 (GBARR on 2000-03-23)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0702/lib/Net/Cmd.pm" >1.0702 (GBARR on 2000-03-13)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0701/lib/Net/Cmd.pm" >1.0701 (GBARR on 2000-03-07)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.07/lib/Net/Cmd.pm" >1.07 (GBARR on 2000-03-06)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0607/lib/Net/Cmd.pm" >1.0607 (GBARR on 1999-09-18)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0606/lib/Net/Cmd.pm" >1.0606 (GBARR on 1998-12-11)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0605/lib/Net/Cmd.pm" >1.0605 (GBARR on 1997-12-21)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0604/lib/Net/Cmd.pm" >1.0604 (GBARR on 1997-12-12)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0603/lib/Net/Cmd.pm" >1.0603 (GBARR on 1997-11-26)</option> <option value="/release/SHAY/libnet-3.15/diff/GBARR/libnet-1.0602/lib/Net/Cmd.pm" >1.0602 (GBARR on 1997-11-18)</option> <option 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class="ellipsis">Exporter</a></li> <li><a href="/pod/Fcntl" title="Fcntl" class="ellipsis">Fcntl</a></li> <li><a href="/pod/File::Basename" title="File::Basename" class="ellipsis">File::Basename</a></li> <li><a href="/pod/FileHandle" title="FileHandle" class="ellipsis">FileHandle</a></li> <li><a href="/pod/IO::Select" title="IO::Select" class="ellipsis">IO::Select</a></li> <li><a href="/pod/IO::Socket" title="IO::Socket" class="ellipsis">IO::Socket</a></li> <li><a href="/pod/POSIX" title="POSIX" class="ellipsis">POSIX</a></li> <li><a href="/pod/Socket" title="Socket" class="ellipsis">Socket</a></li> <li><a href="/pod/Symbol" title="Symbol" class="ellipsis">Symbol</a></li> <li><a href="/pod/Time::Local" title="Time::Local" class="ellipsis">Time::Local</a></li> <li><a href="/pod/constant" title="constant" class="ellipsis">constant</a></li> <li><a href="/pod/strict" title="strict" class="ellipsis">strict</a></li> <li><a href="/pod/utf8" title="utf8" class="ellipsis">utf8</a></li> <li><a href="/pod/vars" title="vars" class="ellipsis">vars</a></li> <li><i class="ttip" title="dynamic_config enabled">and possibly others</i></li> <li> <hr> </li> <li> <a href="/module/Net::Cmd/requires">Reverse dependencies</a> </li> <li> <a href="http://deps.cpantesters.org/?module=Net%3A%3ACmd">CPAN Testers List</a> </li> <li> <a href="https://cpandeps.grinnz.com/?dist=libnet">Dependency graph</a> </li> </ul> </li> <li class="nav-header">Permalinks</li> <li> <a href="/release/SHAY/libnet-3.15/view/lib/Net/Cmd.pm">This version</a> </li> <li> <a href="/pod/Net::Cmd">Latest version</a> </li> <li> <div class="plussers"> <div class="nav-header">++ed by:</div> <div> <a class="display-all" href="/author/KEEDI"><img src="https://www.gravatar.com/avatar/95f905a7a4ccc573c711e9d264c0fde8?d=identicon&s=20" title="KEEDI" alt="KEEDI"></a> <a class="display-all" href="/author/DOHERTY"><img src="https://www.gravatar.com/avatar/9533c36b6385c8321bad636c98e9c0a8?d=identicon&s=20" title="DOHERTY" alt="DOHERTY"></a> <a class="display-all" href="/author/MMUSGROVE"><img src="https://www.gravatar.com/avatar/c8d0367f59978d30016ef08c7a60b961?d=identicon&s=20" title="MMUSGROVE" alt="MMUSGROVE"></a> <a class="display-all" href="/author/ARJONES"><img src="https://www.gravatar.com/avatar/779fdd029141571e2650d9060978c1a1?d=identicon&s=20" title="ARJONES" alt="ARJONES"></a> <a class="display-all" href="/author/DAGOLDEN"><img src="https://www.gravatar.com/avatar/bb755c989fcb9897f28a2c6e00df61e2?d=identicon&s=20" title="DAGOLDEN" alt="DAGOLDEN"></a> </div>  <div> <a href="/dist/libnet/plussers">16 PAUSE users</a> </div> <div> 15 non-PAUSE users </div> </div> </li> <li> <div> <button class="contributors-show-button btn-link">and 1 contributors</button> <div id="metacpan_contributors" class="slide-out slide-out-hidden"> <div> <ul> <li class="contributor" data-cpan-author="GBARR" data-contrib-email="gbarr@pobox.com" > <a href="/author/GBARR" class="cpan-author"> <img class="gravatar" width="20" height="20" src="https://www.gravatar.com/avatar/91e0a99c0201988cad4e53833c8aa2b5?d=identicon&s=20" /> Graham Barr, Steve Hay <shay@cpan.org> </a> </li> </ul> </div> </div> </div> </li> </ul> </div> </nav> <div class="content-navigation"> <div class="breadcrumbs"> <span> <a data-keyboard-shortcut="g a" rel="author" href="/author/SHAY" class="author-name">Steve Hay</a> </span> <span> / </span> <div class="release dist-release status-latest maturity-released"> <span class="dropdown"><b class="caret"></b></span> <select class="select-navigator "> <option selected value="/release/SHAY/libnet-3.15/view/lib/Net/Cmd.pm" >3.15 (SHAY on 2023-03-20)</option> <option value="/release/SHAY/libnet-3.14/view/lib/Net/Cmd.pm" >3.14 (SHAY on 2022-05-22)</option> <option value="/release/SHAY/libnet-3.13/view/lib/Net/Cmd.pm" >3.13 (SHAY on 2020-12-23)</option> <option value="/release/GBARR/libnet-1.22_01/view/lib/Net/Cmd.pm" >1.22_01 DEV (GBARR on 2010-05-31)</option> <option 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(GBARR on 1997-01-07)</option> <option value="/release/GBARR/libnet-1.03/view/lib/Net/Cmd.pm" >1.03 (GBARR on 1997-01-02)</option> <option value="/release/GBARR/libnet-1.02/view/lib/Net/Cmd.pm" >1.02 (GBARR on 1996-12-23)</option> <option value="/release/GBARR/libnet-1.01/view/lib/Net/Cmd.pm" >1.01 (GBARR on 1996-09-05)</option> <option value="/release/GBARR/libnet-1.00/view/lib/Net/Cmd.pm" >1.00 (GBARR on 1996-06-24)</option> </optgroup> </select> <a data-keyboard-shortcut="g d" class="release-name" href="/dist/libnet">libnet-3.15</a> </div> <span class="river-gauge-gauge"> <svg width="24px" height="15px" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <g> <title> River stage five 
 • 154 direct dependents 
 • 10602 total dependents </title> <rect x="0" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="5" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="10" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="15" y="0" width="4" height="15" fill="#7ea3f2" /> <rect x="20" y="0" width="4" height="15" fill="#7ea3f2" /> </g> </svg> </span> <div id="libnet-fav" class="show-logged-in"> <form action="/account/favorite/add" style="display: inline" method="POST"> <input type="hidden" name="remove" value="0"> <input type="hidden" name="release" value="libnet-3.15"> <input type="hidden" name="author" value="SHAY"> <input type="hidden" name="distribution" value="libnet"> <button type="submit" class="favorite highlight"><span>31</span> ++</button> </form> </div> <div class="show-logged-out"> <button class="fav-not-logged-in favorite highlight"><span>31</span> ++</button> </div> / <span>Net::Cmd</span> </div> </div> <main class="content"> <nav class="toc"> <div class="toc-header"><strong>Contents</strong></div> <ul> <li><a href="#NAME">NAME</a></li> <li><a href="#SYNOPSIS">SYNOPSIS</a></li> <li><a href="#DESCRIPTION">DESCRIPTION</a> <ul> <li><a href="#Public-Methods">Public Methods</a></li> <li><a href="#Protected-Methods">Protected Methods</a></li> <li><a href="#Pseudo-Responses">Pseudo Responses</a></li> </ul> </li> <li><a href="#EXPORTS">EXPORTS</a></li> <li><a href="#KNOWN-BUGS">KNOWN BUGS</a></li> <li><a href="#AUTHOR">AUTHOR</a></li> <li><a href="#COPYRIGHT">COPYRIGHT</a></li> <li><a href="#LICENCE">LICENCE</a></li> <li><a href="#VERSION">VERSION</a></li> <li><a href="#DATE">DATE</a></li> <li><a href="#HISTORY">HISTORY</a></li> </ul></nav> <div class="pod anchors"> <h1 id="NAME">NAME</h1> <p>Net::Cmd - Network Command class (as used by FTP, SMTP etc)</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code>use Net::Cmd; @ISA = qw(Net::Cmd);</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p><code>Net::Cmd</code> is a collection of methods that can be inherited by a sub-class of <code>IO::Socket::INET</code>. These methods implement the functionality required for a command based protocol, for example FTP and SMTP.</p> <p>If your sub-class does not also derive from <code>IO::Socket::INET</code> or similar (e.g. <code>IO::Socket::IP</code>, <code>IO::Socket::INET6</code> or <code>IO::Socket::SSL</code>) then you must provide the following methods by other means yourself: <code>close()</code> and <code>timeout()</code>.</p> <h2 id="Public-Methods"><a id="Public"></a>Public Methods</h2> <p>These methods provide a user interface to the <code>Net::Cmd</code> object.</p> <dl> <dt id="debug($level)"><a id="debug"></a><a id="debug-level"></a><code>debug($level)</code></dt> <dd> <p>Set the level of debug information for this object. If <code>$level</code> is not given then the current state is returned. Otherwise the state is changed to <code>$level</code> and the previous state returned.</p> <p>Different packages may implement different levels of debug but a non-zero value results in copies of all commands and responses also being sent to STDERR.</p> <p>If <code>$level</code> is <code>undef</code> then the debug level will be set to the default debug level for the class.</p> <p>This method can also be called as a <i>static</i> method to set/get the default debug level for a given class.</p> </dd> <dt id="message()"><a id="message"></a><code>message()</code></dt> <dd> <p>Returns the text message returned from the last command. In a scalar context it returns a single string, in a list context it will return each line as a separate element. (See <a href="#PSEUDO-RESPONSES">"PSEUDO RESPONSES"</a> below.)</p> </dd> <dt id="code()"><a id="code"></a><code>code()</code></dt> <dd> <p>Returns the 3-digit code from the last command. If a command is pending then the value 0 is returned. (See <a href="#PSEUDO-RESPONSES">"PSEUDO RESPONSES"</a> below.)</p> </dd> <dt id="ok()"><a id="ok"></a><code>ok()</code></dt> <dd> <p>Returns non-zero if the last code value was greater than zero and less than 400. This holds true for most command servers. Servers where this does not hold may override this method.</p> </dd> <dt id="status()"><a id="status"></a><code>status()</code></dt> <dd> <p>Returns the most significant digit of the current status code. If a command is pending then <code>CMD_PENDING</code> is returned.</p> </dd> <dt id="datasend($data)"><a id="datasend"></a><a id="datasend-data"></a><code>datasend($data)</code></dt> <dd> <p>Send data to the remote server, converting LF to CRLF. Any line starting with a '.' will be prefixed with another '.'. <code>$data</code> may be an array or a reference to an array. The <code>$data</code> passed in must be encoded by the caller to octets of whatever encoding is required, e.g. by using the Encode module's <code>encode()</code> function.</p> </dd> <dt id="dataend()"><a id="dataend"></a><code>dataend()</code></dt> <dd> <p>End the sending of data to the remote server. This is done by ensuring that the data already sent ends with CRLF then sending '.CRLF' to end the transmission. Once this data has been sent <code>dataend</code> calls <code>response</code> and returns true if <code>response</code> returns CMD_OK.</p> </dd> </dl> <h2 id="Protected-Methods"><a id="Protected"></a>Protected Methods</h2> <p>These methods are not intended to be called by the user, but used or over-ridden by a sub-class of <code>Net::Cmd</code></p> <dl> <dt id="debug_print($dir,-$text)"><a id="debug_print"></a><a id="debug_print-dir-text"></a><code>debug_print($dir, $text)</code></dt> <dd> <p>Print debugging information. <code>$dir</code> denotes the direction <i>true</i> being data being sent to the server. Calls <code>debug_text</code> before printing to STDERR.</p> </dd> <dt id="debug_text($dir,-$text)"><a id="debug_text"></a><a id="debug_text-dir-text"></a><code>debug_text($dir, $text)</code></dt> <dd> <p>This method is called to print debugging information. <code>$text</code> is the text being sent. The method should return the text to be printed.</p> <p>This is primarily meant for the use of modules such as FTP where passwords are sent, but we do not want to display them in the debugging information.</p> </dd> <dt id="command($cmd[,-$args,-...-])"><a id="command"></a><a id="command-cmd-args"></a><code>command($cmd[, $args, ... ])</code></dt> <dd> <p>Send a command to the command server. All arguments are first joined with a space character and CRLF is appended, this string is then sent to the command server.</p> <p>Returns undef upon failure.</p> </dd> <dt id="unsupported()"><a id="unsupported"></a><code>unsupported()</code></dt> <dd> <p>Sets the status code to 580 and the response text to 'Unsupported command'. Returns zero.</p> </dd> <dt id="response()"><a id="response"></a><code>response()</code></dt> <dd> <p>Obtain a response from the server. Upon success the most significant digit of the status code is returned. Upon failure, timeout etc., <i>CMD_ERROR</i> is returned.</p> </dd> <dt id="parse_response($text)"><a id="parse_response"></a><a id="parse_response-text"></a><code>parse_response($text)</code></dt> <dd> <p>This method is called by <code>response</code> as a method with one argument. It should return an array of 2 values, the 3-digit status code and a flag which is true when this is part of a multi-line response and this line is not the last.</p> </dd> <dt id="getline()"><a id="getline"></a><code>getline()</code></dt> <dd> <p>Retrieve one line, delimited by CRLF, from the remote server. Returns <i>undef</i> upon failure.</p> <p><b>NOTE</b>: If you do use this method for any reason, please remember to add some <code>debug_print</code> calls into your method.</p> </dd> <dt id="ungetline($text)"><a id="ungetline"></a><a id="ungetline-text"></a><code>ungetline($text)</code></dt> <dd> <p>Unget a line of text from the server.</p> </dd> <dt id="rawdatasend($data)"><a id="rawdatasend"></a><a id="rawdatasend-data"></a><code>rawdatasend($data)</code></dt> <dd> <p>Send data to the remote server without performing any conversions. <code>$data</code> is a scalar. As with <code>datasend()</code>, the <code>$data</code> passed in must be encoded by the caller to octets of whatever encoding is required, e.g. by using the Encode module's <code>encode()</code> function.</p> </dd> <dt id="read_until_dot()"><a id="read_until_dot"></a><code>read_until_dot()</code></dt> <dd> <p>Read data from the remote server until a line consisting of a single '.'. Any lines starting with '..' will have one of the '.'s removed.</p> <p>Returns a reference to a list containing the lines, or <i>undef</i> upon failure.</p> </dd> <dt id="tied_fh()"><a id="tied_fh"></a><code>tied_fh()</code></dt> <dd> <p>Returns a filehandle tied to the Net::Cmd object. After issuing a command, you may read from this filehandle using read() or <>. The filehandle will return EOF when the final dot is encountered. Similarly, you may write to the filehandle in order to send data to the server after issuing a command that expects data to be written.</p> <p>See the Net::POP3 and Net::SMTP modules for examples of this.</p> </dd> </dl> <h2 id="Pseudo-Responses"><a id="Pseudo"></a>Pseudo Responses</h2> <p>Normally the values returned by <code>message()</code> and <code>code()</code> are obtained from the remote server, but in a few circumstances, as detailed below, <code>Net::Cmd</code> will return values that it sets. You can alter this behavior by overriding DEF_REPLY_CODE() to specify a different default reply code, or overriding one of the specific error handling methods below.</p> <dl> <dt id="Initial-value"><a id="Initial"></a>Initial value</dt> <dd> <p>Before any command has executed or if an unexpected error occurs <code>code()</code> will return "421" (temporary connection failure) and <code>message()</code> will return undef.</p> </dd> <dt id="Connection-closed"><a id="Connection"></a>Connection closed</dt> <dd> <p>If the underlying <code>IO::Handle</code> is closed, or if there are any read or write failures, the file handle will be forced closed, and <code>code()</code> will return "421" (temporary connection failure) and <code>message()</code> will return "[$pkg] Connection closed" (where $pkg is the name of the class that subclassed <code>Net::Cmd</code>). The _set_status_closed() method can be overridden to set a different message (by calling set_status()) or otherwise trap this error.</p> </dd> <dt id="Timeout">Timeout</dt> <dd> <p>If there is a read or write timeout <code>code()</code> will return "421" (temporary connection failure) and <code>message()</code> will return "[$pkg] Timeout" (where $pkg is the name of the class that subclassed <code>Net::Cmd</code>). The _set_status_timeout() method can be overridden to set a different message (by calling set_status()) or otherwise trap this error.</p> </dd> </dl> <h1 id="EXPORTS">EXPORTS</h1> <p>The following symbols are, or can be, exported by this module:</p> <dl> <dt id="Default-Exports"><a id="Default"></a>Default Exports</dt> <dd> <p><code>CMD_INFO</code>, <code>CMD_OK</code>, <code>CMD_MORE</code>, <code>CMD_REJECT</code>, <code>CMD_ERROR</code>, <code>CMD_PENDING</code>.</p> <p>(These correspond to possible results of <code>response()</code> and <code>status()</code>.)</p> </dd> <dt id="Optional-Exports"><a id="Optional"></a>Optional Exports</dt> <dd> <p><i>None</i>.</p> </dd> <dt id="Export-Tags"><a id="Export"></a>Export Tags</dt> <dd> <p><i>None</i>.</p> </dd> </dl> <h1 id="KNOWN-BUGS"><a id="KNOWN"></a>KNOWN BUGS</h1> <p>See <a href="https://rt.cpan.org/Dist/Display.html?Status=Active&Queue=libnet">https://rt.cpan.org/Dist/Display.html?Status=Active&Queue=libnet</a>.</p> <h1 id="AUTHOR">AUTHOR</h1> <p>Graham Barr <<a href="mailto:gbarr@pobox.com">gbarr@pobox.com</a>>.</p> <p>Steve Hay <<a href="mailto:shay@cpan.org">shay@cpan.org</a>> is now maintaining libnet as of version 1.22_02.</p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright (C) 1995-2006 Graham Barr. All rights reserved.</p> <p>Copyright (C) 2013-2016, 2020, 2022 Steve Hay. All rights reserved.</p> <h1 id="LICENCE">LICENCE</h1> <p>This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself, i.e. under the terms of either the GNU General Public License or the Artistic License, as specified in the <i>LICENCE</i> file.</p> <h1 id="VERSION">VERSION</h1> <p>Version 3.15</p> <h1 id="DATE">DATE</h1> <p>20 March 2023</p> <h1 id="HISTORY">HISTORY</h1> <p>See the <i>Changes</i> file.</p></div> <div id="metacpan_install-instructions-dialog" class="modal fade"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <h4 class="modal-title">Module Install Instructions</h4> </div> <div class="modal-body"> <p>To install Net::Cmd, copy and paste the appropriate command in to your terminal.</p> <p><a href="/dist/App-cpanminus/view/bin/cpanm">cpanm</a></p> <pre><code>cpanm Net::Cmd</code></pre> <p><a 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Net::Cmd - Network Command class (as used by FTP, SMTP etc) - metacpan.org