ND=$1 T=/tmp/cal$$ trap "rm -f /tmp/cal$$*; exit" 0 1 2 13 15 sed "s/.*!// w ${T}1 s/ .*// " | /usr/lib/calendar4 >${T}3 : T1 = calpath uid, for every possible calendar : T3 = calpath, for every real calendar join ${T}3 ${T}1 >${T}4; mv ${T}4 ${T}1 : T1 = calpath uid, for every real calendar /usr/lib/calendar2 $ND >${T}2 : T2 = egrep pattern for dates of interest egrep -i -f ${T}2 '' `cat ${T}3` : result = calpath:entry, for every calendar consulted