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<h1 class="topictitle1">Case-sensitivity in an integrated file system user-defined file system</h1>
<div><p><span>You can specify whether object names in
the user-defined file system (UDFS) will be case-sensitive or case-insensitive
when you create it.</span></p>
<div class="section"><p>When you select case-sensitivity, uppercase and lowercase characters
are distinguished when searching for object names. For example, a name that
is supplied in all uppercase characters will not match the same name in which
any of the characters are lowercase. Therefore, <samp class="codeph">/home/MURPH/</samp> and <samp class="codeph">/home/murph/</samp> are
recognized as different directories. To create a case-sensitive UDFS, you
can specify *MIXED for the CASE parameter when using the <span class="cmdname">Create User-Defined
File System (CRTUDFS)</span> command.</p>
</div>
<div class="section"><p>When you select case-insensitivity, the server does not distinguish
between uppercase and lowercase characters during searches for names. Therefore,
the server would recognize <samp class="codeph">/home/CAYCE</samp> and <samp class="codeph">/HOME/cayce</samp> as
the same directory, not as two separate directories. To create a case-insensitive
UDFS, you can specify *MONO for the CASE parameter when using the <span class="cmdname">CRTUDFS</span> command.</p>
</div>
<div class="section"><p>In either case, the file system saves the same uppercase and lowercase
forms in which the user enters object names. The case-sensitivity option
only applies to how the user searches for names through the server.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaaxudfsfs.htm" title="The user-defined file systems (UDFSs) reside on the auxiliary storage pool (ASP) or independent auxiliary storage pool (ASP) of your choice. You create and manage these file systems.">User-defined file systems (UDFSs)</a></div>
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<div class="relinfo"><strong>Related information</strong><br />
<div><a href="../cl/crtudfs.htm">Create User-Defined File System (CRTUDFS) command</a></div>
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