ref: b9745c60a1bf2a3876e411d38c67a0980d70e3a3 dir: /sys/src/cmd/upas/binscripts/msgcat.rc/
#!/bin/rc f=$* if(~ $#f 0) f=/mail/fs/mbox/[0-9]* f=`{echo $f|sed s:/mail/fs/mbox/::g} { for(i in $f) echo $i p } | upas/nedmail >[2=]