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\section isatty isatty - test if the specified file descriptor is a tty
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\subsection isatty-synopsis Synopsis
<tt>isatty [FILE DESCRIPTOR]</tt>
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\subsection isatty-description Description
Help cleanup
Large list of changes, including formatting and typos for most commands.
More substantive changes have been made to alias, bind, block, break,
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<tt>isatty</tt> tests if a file descriptor is a tty.
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Help cleanup
Large list of changes, including formatting and typos for most commands.
More substantive changes have been made to alias, bind, block, break,
builtin, case, cd, commandline, count, else, emit, fish_config, funced,
function, functions, history, math, mimedb, nextd, not, popd, prevd,
pushd, pwd, random, read, set, set_color, switch, test, trap, type,
ulimit, umask, and while.
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<tt>FILE DESCRIPTOR</tt> may be either the number of a file descriptor, or one of the
strings <tt>stdin</tt>, \c stdout and <tt>stderr</tt>.
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If the specified file descriptor is a tty, the exit status of the command is
Help cleanup
Large list of changes, including formatting and typos for most commands.
More substantive changes have been made to alias, bind, block, break,
builtin, case, cd, commandline, count, else, emit, fish_config, funced,
function, functions, history, math, mimedb, nextd, not, popd, prevd,
pushd, pwd, random, read, set, set_color, switch, test, trap, type,
ulimit, umask, and while.
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zero. Otherwise, it is non-zero.
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