ref: 2fe0d40ef94dfc8934c0eec79237e1c2e1785f8d
dir: /rc/bin/patch/remove/
#!/bin/rc
rfork e
if(~ $#* 0){
echo 'usage: patch/remove patch-name...' >[1=2]
exit usage
}
if(! test -d /n/sources/patch){
rfork n
9fs sources
}
for(i){
if(! test -d /n/sources/patch/$i)
echo 'no such patch' /n/sources/patch/$i >[1=2]
if not
rm -rf /n/sources/patch/$i
}