fish-shell/doc_src/isatty.txt

13 lines
376 B
Text
Raw Normal View History

\section isatty isatty - test if the specidied file descriptor is a tty
\subsection isatty-synopsis Synopsis
<tt>isatty [FILE DESCRIPTOR]</tt>
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.