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attr

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attr -V (return code: 1)

attr: invalid option -- '-'
Unrecognized option: ?
Usage: attr [-LRSq] -s attrname [-V attrvalue] pathname  # set value
       attr [-LRSq] -g attrname pathname                 # get value
       attr [-LRSq] -r attrname pathname                 # remove attr
       attr [-LRq]  -l pathname                          # list attrs 
      -s reads a value from stdin and -g writes a value to stdout

attr (return code: 1)

A filename to operate on is required
Usage: attr [-LRSq] -s attrname [-V attrvalue] pathname  # set value
       attr [-LRSq] -g attrname pathname                 # get value
       attr [-LRSq] -r attrname pathname                 # remove attr
       attr [-LRq]  -l pathname                          # list attrs 
      -s reads a value from stdin and -g writes a value to stdout

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