ref: 36af8405521be371605e4658ec8f4b133f3c7d6f 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=]