ref: c8e25d2a18c0395431abc5818a1d2f0561b0181f
dir: /sys/src/cmd/upas/binscripts/mkfile.rc/
RCFILES=mail.rc all:Q: ; installall:Q: install ; install:V: cp mail.rc /rc/bin/mail safeinstall:V: cp mail.rc /rc/bin/mail safeinstallall:V: cp mail.rc /rc/bin/mail clean:Q: ; nuke:V: rm -f /rc/bin/mail