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isatty

Langue: en

Version: 146194 (fedora - 04/07/09)

Autres sections - même nom

Section: 1 (Commandes utilisateur)

isatty - test if the specified file descriptor is a tty

isatty [FILE DESCRIPTOR]

where FILE DESCRIPTOR may be either the number of a file descriptor, or one of the strings stdin, stdout and stderr.

If the specified file descriptor is a tty, the exit status of the command is zero, otherwise, it is non-zero.