.TH OS 1 hosted.SH NAMEos \- interface to host OS commands (hosted Inferno only).SH SYNOPSIS.B bind -a '#C' /.br.B os[.B -b] [.B -m.I mountpoint] [.BI -d " dir"] [.B -n] [.BI -N " level"].I cmd[.IR arg ...].SH DESCRIPTION.I Osuses a.IR cmd (3)device to execute a command,.IR cmd ,on a host system.If the.B -moption is given,.I osuses the device at.IR mountpoint ,otherwise it is asssumed to be at.BR /cmd ,and is bound into the local namespace if necessary..PPThe.B -doption causes the command to run in directory.IR dir ;an error results and the command will not run if.I dirdoes not exist or is inaccessible.The standard output and standard error of the command appear on the standard outputand standard error streams of the.I oscommand itself..I Oscopies the standard input to the remote command's standard input; redirect.IR os 'sinput to.B /dev/nullif there is no input to the command..I Osterminates when.I cmddoes, and its exit status reflects the status of.I cmd(if available)..PPIf the.I oscommand is killed or exits (eg, for lack of input and output),the host's own process control operations are used to (attempt to) kill.IR cmd ,if it is still running.The.B -b(background) option suppresses that behaviour..PPThe.B -noption causes.I cmdto run with less than normal priority (`nice').The.B -Noption sets low priority to a particular.I levelfrom 1 to 3..SH FILES.B /cmd/clone.SH SOURCE.B /appl/cmd/os.b.SH "SEE ALSO".IR cpu (1),.IR rcmd (1),.IR cmd (3).SH DIAGNOSTICSThe exit status of.I osreflects any error that occurs when starting.I cmdand, if it starts successfully, the status of.I osis the exit status of.IR cmd .