CH(1): change file attributes
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     USAGE

         usage: ch [-D] {attr value}
             -D: debug

     DESCRIPTION

      ch changes zx attributes for files.

     The fake attribute uids can be used to change both uid  and  gid.
     The  attribute  mode admits as a value the forms +rwx and -rwx to
     add or remove those bits.

     The value for the size attribute admits a trailing k, m, or g  to
     indicate  a  size  expressed  as an integral number of Kibibytes,
     Mibibytes, or Gibibytes.

     EXAMPLES

     Add read permission to all files within the current directory:

         ; lf , | ch mode +r

     Create a file with 1M of zeros:

         ; eco -n >file
         ; lf file | ch size 1m

     SOURCE

     +o    /zx/sys/src/clive/cmd/ch

     SEE ALSO

     +o    dir(3) for a description of attributes.

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      User's manual. Section 1. Copyright © LSUB 2014-2016