ref: a74c7ca5ea3290dd55c6f2a03aa7c3bcd22d3f61
dir: /rc/bin/ape/ln/
#!/bin/rc
argv0=$0
force=n
while(! ~ $#* 0 && ~ $1 -*){
switch($1){
case -f
force=y
case -s
;
case *
echo 'usage: ln [-s] [-f] source destination' >[1=2]
exit 'usage'
}
shift
}
if(~ $force n && test -e $2){
echo ln: $2 destination exists >[1=2]
exit 'usage'
}
exec cp -gux $1 $2