for one liner
for i in {3..26}; do a=`expr 100 + $i`; echo ${a};done
lsof
TYPEが{DEL|cwd|mem|rtd|txt|}以外の件数
http://linux.die.net/man/8/lsof
lsof | awk '{if($4 !~ /{DEL|cwd|mem|rtd|txt|}/) print}' | sed -e "1d" | wc -l
grep
find ./ -type f | xargs -I {} grep -ln "cache" {}