Question

linux如何删除多个文件中的指定行

有多个shtml文件，我想删除<meta http-equiv="Expires" CONTENT="-1">这一行。
[niexin@localhost source]$ grep -rni "content=\"-1\"" user/lighttpd-1.4.20/www_avantec/
user/lighttpd-1.4.20/www_avantec/wireless/basic.shtml:1897:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/security.shtml:1534:<meta http-equiv="Expires" CONTENT="-1">
user/lighttpd-1.4.20/www_avantec/wireless/wps.shtml:386:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/advanced.shtml:901:<meta http-equiv="Expires" CONTENT="-1">
user/lighttpd-1.4.20/www_avantec/wireless/apstatistics.shtml:184:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/wds.shtml:443:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/wapi_cert_user_upload.html:48:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/htmode.shtml:1896:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/wapi_cert_as_upload.html:48:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/apcli.shtml:532:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/wmm.shtml:668:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wireless/stainfo.shtml:150:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/basic.shtml:1897:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/security.shtml:1534:<meta http-equiv="Expires" CONTENT="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/wps.shtml:386:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/advanced.shtml:900:<meta http-equiv="Expires" CONTENT="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/apstatistics.shtml:183:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/wds.shtml:443:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/htmode.shtml:1896:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/apcli.shtml:531:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/wmm.shtml:668:<meta http-equiv="Expires" content="-1">
user/lighttpd-1.4.20/www_avantec/wifi2/stainfo.shtml:152:<meta http-equiv="Expires" content="-1">
[niexin@localhost source]$

Answer 1

sed -i '/meta http-equiv/'d my.txt

追问

怎么一次性删除这些文件里的这些行啊？

追答

都说了这个命令
sed -i '/meta http-equiv/'d my.txt
meta http-equiv换成你要删除的行包含的字符串
my.txt换成你的文件名，你如你文件名是test1 test2...你就换成test*表示全部含有test关键字的文件

Answer 2

那么多。。。
sed '/<meta http-equiv="Expires" CONTENT="-1">/d' file

追问

怎么一次性删除这些文件里的这些行啊？