小脚本:用shell摹拟grep -i

================================================================ /home/lee#cat Grep #!/bin/bash # (($#!=2))||[[ ! -f $2 ]]&&{ echo "Usage:$(basename $0) filename"; exit 1; } str=$(echo $1|od -b) str=${str% *} str=${str#* } patten=$( for i in $str;do [[ $i == 14[0-9] ]] && echo -ne "\\0133\\0${i/4/0}\\0$i\\0135" ||\ echo -ne "\\0133\\0${i/0/4}\\0$i\\0135" done ) while read line;do [[ $line == *$patten* ]] && echo $line done<$2 ================================================================ test: /home/lee#chmod +x Grep /home/lee#cat file abcd aBcD Abcabc AbCd aaaasadfsdf bbb ccc /home/lee#grep -i abcd /home/lee#grep -i abcd file abcd aBcD AbCd /home/lee#Grep abcd file abcd aBcD AbCd /home/lee#

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