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Terminal Devices

UNIX environments support virtually any terminal type, terminal definitions being held in a system database. This database must contain enough details for the terminal being used in order that Adis can function.

Adis uses the standard input and output device interfaces for terminal I/O and so such terminal I/O can be redirected but with the restriction that you must not redirect standard input from a file unless it is a terminal device.

So, for example, the following is legal:

cobrun prog < `tty` >`tty`

(use the appropriate (`) character) whereas redirecting the input from an ordinary file or /dev/null is not legal and could result in a run time error.

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