Provided by: subuser_0.6.2-3_all bug


       execute-json-from-fifo  -  Read a fifo stream of POSIX commands serialized as JSON and run


       execute-json-from-fifo FIFO


       This is a very simple script which executes commands passed as JSON to a given named pipe.
       This  is useful when one needs to create a super-privileged container which is able to run
       commands on the host system. It can also be used when one needs to give  a  container  the
       ability to launch commands as a non-privileged user on the host.

       To launch this script run:

              $ execute-json-from-fifo PATH_TO_NAMED_PIPE

       You can now send commands to the pipe. The protocol is as follows:

              {"command":["echo", "some", "command"], "stdin":"path", "stdout":"path", "stderr":"path", "cwd":"path", "env":{"ENVVAR":"value"}}

       Note:  the  protocol  is  newline  delimited.  So  never  include new-lines in the command

       stdin, stdout, stderr, cwd and env are all optional.

       Passing ["exit"] to command stops the script.


       Timothy Hobbs (

                                          09 April 2016                                    man(1)