CUer

sed "s#</td>#789#g" 1.txt >2.txt
复制代码

sed "s/<\/td>/789/g" 1.txt >2.txt
复制代码

CUer

sed "s#http://.*\.com#789#g" 1.txt >2.txt
复制代码

CUer

sed "s/<[^>]\+>//g" 1.txt >2.txt
复制代码

CUer

正则表达式使用详解
http://bbs.chinaunix.net/thread-63273-1-1.html

Regular Expression 简介
http://bbs.chinaunix.net/thread-605570-1-1.html

Regular Expression POSIX Extension
http://bbs.chinaunix.net/viewthread.php?tid=1617693#pid11506403