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(zsh.info)The zsh/cap Module

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The zsh/cap Module
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The zsh/cap module is used for manipulating POSIX.1e (POSIX.6)
capability sets.  If the operating system does not support this
interface, the builtins defined by this module will do nothing.  The
builtins in this module are:

cap [ CAPABILITIES ]
     Change the shell's process capability sets to the specified
     CAPABILITIES, otherwise display the shell's current capabilities.

getcap FILENAME ...
     This is a built-in implementation of the POSIX standard utility.
     It displays the capability sets on each specified FILENAME.

setcap CAPABILITIES FILENAME ...
     This is a built-in implementation of the POSIX standard utility.
     It sets the capability sets on each specified FILENAME to the
     specified CAPABILITIES.