asà es definamos asà Oct 21
today=`date | tr -s ‘ ‘ | cut -d ‘ ‘ -f 2,3` && if [ “$today” = ‘oct 21’ ]; then echo Happy BDay Xanatos ; fi
y si lo ejecutamos
$ time today=`date | tr -s ‘ ‘ | cut -d ‘ ‘ -f 2,3` && if [ “$today” = ‘oct 21’ ]; then echo Happy BDay Xanatos ; fi
real   0m0.059s
user   0m0.004s
sys   0m0.004s
XD