shell添加字符到指定行的行首或行尾

添加字符到行尾

#!/bin/bash

#Auth: Zz

#Script: add tail

cat tt.txt | while read line

do

echo $line | sed 's/create table.*/&_h/g'

done

添加字符到行首

#!/bin/bash

#Auth: Zz

#Script: add head

cat tt.txt | while read line                                           #一行一行读取tt.txt

do

echo $line | sed 's/.*create table/aa&/g'

done