/usr/share/zsh/help/popd is in zsh-common 5.1.1-1ubuntu2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 | popd [ -q ] [ {+|-}n ]
Remove an entry from the directory stack, and perform a cd to
the new top directory. With no argument, the current top entry
is removed. An argument of the form `+n' identifies a stack
entry by counting from the left of the list shown by the dirs
command, starting with zero. An argument of the form -n counts
from the right. If the PUSHD_MINUS option is set, the meanings
of `+' and `-' in this context are swapped.
If the -q (quiet) option is specified, the hook function chpwd
and the functions in the array $chpwd_functions are not called,
and the new directory stack is not printed. This is useful for
calls to popd that do not change the environment seen by an
interactive user.
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