Add -i, --ifexists so that we can do this

rc-sercice -i foo -- restart
instead of this
  rc-service -e foo && rc-service foo -- restart

man/rc-service.8

@@ -1,4 +1,4 @@
-.\" Copyright 2008 Roy Marples
+.\" Copyright 2008-2009 Roy Marples
 .\" All rights reserved
 .\"
 .\" Redistribution and use in source and binary forms, with or without
@@ -22,7 +22,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd Mar 26, 2008
+.Dd May 1, 2009
 .Dt RC-SERVICE 8 SMM
 .Os OpenRC
 .Sh NAME
@@ -30,20 +30,26 @@
 .Nd locate and run an OpenRC service with the given arguments 
 .Sh SYNOPSIS
 .Nm
+.Op Fl i , -ifexists
 .Ar service cmd
 .Op Ar ...
 .Nm
-.Fl l , -list
-.Nm
 .Fl e , -exists
 .Ar service
 .Nm
+.Fl l , -list
+.Nm
 .Fl r , -resolve
 .Ar service
 .Sh DESCRIPTION
 Service scripts could be in different places on different systems. 
 .Nm
 locates the specified service and runs it with the given arguments.
+If
+.Fl i , -ifexists
+is given then
+.Nm
+returns 0 even if the service does not exist.
 .Pp
 If given the
 .Fl l , -list
@@ -51,11 +57,11 @@ argument then
 .Nm
 will list all available services.
 .Pp
-.Fl -e , exists
+.Fl e , -exists
 return 0 if it can find
 .Ar service ,
 otherwise -1.
-.Fl -r , resolve
+.Fl r , -resolve
 does the same and also prints the full path of the service to stdout.
 .Sh SEE ALSO
 .Xr rc 8 ,