2007-01-27 22:12:15 +08:00
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\section isatty isatty - test if the specified file descriptor is a tty
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2006-09-20 00:53:17 +08:00
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\subsection isatty-synopsis Synopsis
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<tt>isatty [FILE DESCRIPTOR]</tt>
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2013-04-22 09:13:18 +08:00
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\subsection isatty-description Description
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The <tt>isatty</tt> command is used to test if a file descriptor is a tty.
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2006-09-20 00:53:17 +08:00
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2013-04-22 09:13:18 +08:00
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FILE DESCRIPTOR may be either the number of a file descriptor, or one of the
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strings stdin, stdout and stderr.
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If the specified file descriptor is a tty, the exit status of the command is
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zero, otherwise, it is non-zero.
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2006-09-20 00:53:17 +08:00
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