https://community.appian.com/support/w/kb/229/kb-1003-users-are-unable-to-execute-appian-engine-scriptsen-USTelligent Community 12https://community.appian.com/support/w/kb/229/kb-1003-users-are-unable-to-execute-appian-engine-scriptsThu, 09 Feb 2017 22:07:29 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:4baa581f-2fec-429f-99fc-def518f4ce55Nick Vigilantehttps://community.appian.com/support/w/kb/229/kb-1003-users-are-unable-to-execute-appian-engine-scripts#commentsCurrent Revision posted to Appian Knowledge Base by Nick Vigilante on 2/9/2017 10:07:29 PM<br /> <div class="row content_container"> <h2 id="symptoms">Symptoms</h2> <p>The following scripts immediately hang when attempting to run:</p> <ul> <li><strong>checkengine.sh</strong></li> <li><strong>start-suite.sh</strong></li> <li><strong>stop-suite.sh</strong></li> <li><strong>cleanup.sh</strong></li> <li><strong>checkpoint-suite.sh</strong></li> </ul> <h2 id="cause">Cause</h2> <p>The operating system&#39;s <strong>hosts</strong> file contains illegal syntax preventing further execution of the scripts.</p> <h2 id="action">Action</h2> <p>Check the <strong>hosts</strong> file for any of the following issues:</p> <ul> <li>Invalid characters in the file.</li> <li>Invalid IP addresses are present.</li> <li>Hostnames are incorrectly typed.</li> <li>Unmarked comment sections.</li> </ul> <h2 id="affected-versions">Affected Versions</h2> <p>This article applies to all versions of Appian.</p> </div> <p>Last Reviewed:&nbsp;February 2017</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: administration, scripts</div>