如何用execline编写Linux脚本

#!/bin/execlineb

/bin/export PATH "/sbin:/bin:/usr/sbin:/usr/bin"

# run the traditional startup services

/bin/foreground { /sbin/rc 1 }

# create the stopit and reboot files for runit and chmod them appropriately 

/bin/foreground { /bin/touch /etc/runit/stopit }

/bin/foreground { /bin/touch /etc/runit/reboot }

/bin/foreground { /bin/chmod 0 /etc/runit/stopit }

/bin/foreground { /bin/chmod 0 /etc/runit/reboot }

# remove /sbin/runit.old if it's found; that indicates runit was upgraded

/bin/foreground { /bin/if { /usr/bin/test -f /sbin/runit.old } /bin/rm -f /sbin/runit.old }

/bin/foreground { /bin/echo }