Check input device is a terminal: Difference between revisions
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Thundergnat (talk | contribs) m (Promote to task, lots of examples, most of the concerns and controversy has been resolved) |
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There is no explicit way (ie <tt>isatty()</tt>)to do this; however, if we ''assume'' that standard input ''is'' a terminal, we can check if the input stream has been redirected (presumably to something other than a terminal). |
There is no explicit way (ie <tt>isatty()</tt>)to do this; however, if we ''assume'' that standard input ''is'' a terminal, we can check if the input stream has been redirected (presumably to something other than a terminal). |
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<lang Nemerle>def isTerm = System.Console.IsInputRedirected;</lang> |
<lang Nemerle>def isTerm = System.Console.IsInputRedirected;</lang> |
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=={{header|Nim}}== |
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Using function "isatty" of standard module "terminal" which accepts a File as argument. |
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<lang Nim>import terminal |
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echo if stdin.isatty: "stdin is a tty" else: "stdin is not a tty"</lang> |
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{{out}} |
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<pre>Command: ./check_input_dev |
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Result: stdin is a tty</pre> |
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<pre>Command: ./check_input_dev <somefile |
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Result: stdin is not a tty</pre> |
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=={{header|OCaml}}== |
=={{header|OCaml}}== |
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