title: Find and replace at powershell
body: <p>My textfile looks like this:</p>
  
  <pre><code>-------------------
  Set PRGVER="V1.0.12"
  Set PRGDIR=C:\PRGSTD\oif_mes\OIFplus
  Set PRGEXE=OIFplus.bat
  Set PRGTXT=OIFplus
  
  echo %PRGTXT%, %PRGVER%
  start "%PRGTXT%" /D%PRGDIR%\%PRGVER%\ %PRGDIR%\%PRGVER%\%PRGEXE%
  ----------------------
  </code></pre>
  
  <p>What I wan't to do, edit this file, only change <code>Set PRGVER="V1.0.12"</code> to a new number,  like this <code>Set PRGVER=V1.0.13"</code>.<br>
  When is start the PS Script, I don't know the whole string, the number between <code>""</code>.<br>
  I only know, find string variable: <code>Set PRGVER=""</code>.</p>
  
  <p>How can I replace only the first value between <code>""</code>?</p>