grep -n帅选出是哪行 awk，sed 修改添加文件字段

admin

grep -n "POSTCONFIG" /etc/rc.local|grep -v "vyatta" |awk '{print $1}' |awk -F ":" '{print $1}'
获取所需要的字符在哪行：
grep -n "ServerName .*www" /etc/httpd/conf/httpd.conf  |awk -F ":" '{print $1}'
2 _+ V6 f- H) N3 h! x) k

admin

设置修改：
sed -i 's/#ServerName .*:80/ServerName controller:80/g' /etc/httpd/conf/httpd.conf

筛选：
grep -n 'ServerName ' /etc/httpd/conf/httpd.conf