.B setsid
runs a program in a new session. The command calls
.BR fork (2)
-if already a process group leader. Otherwise, it executes a program in the
-current process.
+if already a process group leader. Otherwise, it executes a program in the
+current process. This default behavior is possible to override by
+the \fB\-\-fork\fR option.
.SH OPTIONS
.TP
.BR \-c , " \-\-ctty"
Set the controlling terminal to the current one.
.TP
+.BR \-f , " \-\-fork"
+Always create a new process.
+.TP
.BR \-w , " \-\-wait"
Wait for the execution of the program to end, and return the exit value of
this program as the return value of