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  73                       <li class="asset-meta-list-item">Posted on <time datetime="2004-09-13T18:07:35-08:00" itemprop="datePublished">September 13, 2004</time></li>
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  84                   <p>There is a slight problem with the "set everything and verify it" script cmconfig.cmd. The idea was that that one script would perform 3 separate actions:</p>
  85
  86 <ol>
  87   <li>Set up Clearquest configuration parameters (installutil)</li>
  88
  89   <li>Set up Clearcase configuration parameters (as per the logged in user) (setccconf.vbs)</li>
  90
  91   <li>Verify the installation (cmverify.cmd)</li>
  92 </ol>
  93
  94 <p>The problem is with #2 being VBScript and #3 happening as a result of executing from the cmconfig.cmd script. While setccconf.vbs does indeed set the proper configuration environment variables as soon as it ends those settings are no longer set anymore by the evoking script only. All other (new) processes know about the change to the environment variables. To illustrate this odd phenomena:</p>
  95
  96 <div class="code">
  97 <pre>
  98 $ <u>type setenv_var.vbs</u>
  99 Set sh  = WScript.CreateObject ("WScript.Shell")
 100 Set env = sh.Environment ("USER")
 101
 102 env ("foo") = "bar"
 103 $ <u>type senenv_var.cmd</u>
 104 @echo off
 105 set foo=bar
 106 $ <u>echo foo = %foo%</u>
 107 foo = %foo%
 108 $ <u>cscript setenv_var.vbs</u>
 109 $ <u>echo foo = %foo%</u>
 110 foo = %foo%
 111 $ <u>call setenv_var.cmd</u>
 112 $ <u>echo foo = %foo%</u>
 113 foo = bar
 114 $ <u>cmd /c echo foo = %foo%</u>
 115 foo = bar
 116 </pre>
 117 </div>
 118
 119 <p>Why it works for a .cmd script but not for a .vbs script I don't know.</p>
 120
 121 <p>So I will change cmconfig.cmd to do #1 and #2 above but skip #3. This means two things:</p>
 122
 123 <ol>
 124   <li>Customers will have to run cmconfig.cmd first, then cmverify.cmd second</li>
 125
 126   <li>The running of cmverify.cmd must be done in a separate, new cmd session</li>
 127 </ol>
 128
 129 <p>The reason for #2 is that even after cmconfig.cmd is run environment variables such as CLEARCASE_PRIMARY_GROUP and CLEARCASE_GROUPS will not have been "exported" into that cmd's environment (unless somebody can tell me how to set the parent's environment variables from VBScript...).</p>
 130
 131 <p>For the point and click crowd this should be OK. The email message you send the customer should have two links: one to cmconfig.cmd and one to cmverify.cmd. If the customer clicks the cmconfig.cmd link then cmconfig.cmd should run, in it's own process, and go away. Subsequently if the user clicks on cmverify.cmd that will run in it's own cmd process and it should pick up the appropriate environment variable settings.</p>
 132
 133 <p>There have been many requests for enhancements to the configuration scripts including updating the TOOLS database on successful verification and performing additional checks such as "is this user really in the AD group". I believe I will only be able to solve the above problem by having the setccconf.vbs script actually envoke the cmverify.cmd directly so that the environment variables that setccconf.vbs just set are exported into the cmverify.cmd's environment.</p>
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