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<title>The GNU Fortran Compiler: GFORTRAN_STDIN_UNIT</title>
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<h3 class="section">3.2 <code>GFORTRAN_STDIN_UNIT</code>&mdash;Unit number for standard input</h3>
<p>This environment variable can be used to select the unit number
preconnected to standard input. This must be a positive integer.
The default value is 5.
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