Check input device is a terminal: Difference between revisions
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Input doesn't come from tty. |
Input doesn't come from tty. |
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</pre> |
</pre> |
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=={{header|Ol}}== |
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<lang scheme> |
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(define (isatty? fd) (syscall 16 fd 19)) |
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(print (if (isatty? stdin) |
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"Input comes from tty." |
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"Input doesn't come from tty.")) |
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</lang> |
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=={{header|Perl}}== |
=={{header|Perl}}== |
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