os man page on Inferno

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OS(1)									 OS(1)

NAME
       os - interface to host OS commands (hosted Inferno only)

SYNOPSIS
       bind -a '#C' /
       os [ -b ] [ -m mountpoint ] [ -d dir ] [ -n ] [ -N level ] cmd [ arg...
       ]

DESCRIPTION
       Os uses a cmd(3) device to execute a command, cmd, on  a	 host  system.
       If  the -m option is given, os uses the device at mountpoint, otherwise
       it is asssumed to be at /cmd, and is bound into the local namespace  if
       necessary.

       The  -d	option	causes	the  command to run in directory dir; an error
       results and the command will not run if dir does not exist or is	 inac‐
       cessible.  The standard output and standard error of the command appear
       on the standard output and standard error streams  of  the  os  command
       itself.	 Os copies the standard input to the remote command's standard
       input; redirect os's input to /dev/null if there is  no	input  to  the
       command.	 Os terminates when cmd does, and its exit status reflects the
       status of cmd (if available).

       If the os command is killed or exits (eg, for lack of  input  and  out‐
       put),  the  host's  own process control operations are used to (attempt
       to) kill cmd, if it is still running.  The -b (background) option  sup‐
       presses that behaviour.

       The  -n	option	causes	cmd  to	 run  with  less  than normal priority
       (`nice').  The -N option sets low priority to a particular level from 1
       to 3.

FILES
       /cmd/clone

SOURCE
       /appl/cmd/os.b

SEE ALSO
       cpu(1), rcmd(1), cmd(3)

DIAGNOSTICS
       The  exit status of os reflects any error that occurs when starting cmd
       and, if it starts successfully, the status of os is the exit status  of
       cmd.

				    hosted				 OS(1)
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