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OPTIONS
Change the mode of each FILE to MODE.
-c, --changes
like verbose but report only when a change is made
--no-preserve-root
do not treat ‘/’ specially (the default)
--preserve-root
fail to operate recursively on ‘/’
-f, --silent, --quiet
suppress most error messages
-v, --verbose
output a diagnostic for every file processed
--reference=RFILE
use RFILE’s mode instead of MODE values
-R, --recursive
change files and directories recursively
--help display this help and exit
--version
output version information and exit
Each MODE is of the form ‘[ugoa]*([-+=]([rwxXst]*|[ugo]))+’.
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