How to change contents of a file in shell script?

Question

I am creating a script script1.sh through which I have to change an xml file( abc.xml ) contents. The contents of xml file are

area = xyz/a
url = "sqlserver://servername:portno/a"
username=""
password=""

area = xyz/b
url = "sqlserver://servername:portno/b"
username=""
password=""

I have to change servername , portno , username and password for both area using script1.sh . Servername and portno will be same for both area but username and password will differ. So how can I make changes from script1.sh to abc.xml

sed -i 's/$strurl/$url/g' context.sh

This is how I am searching but can't search and change url rest all are fine. I think the url string is too big to be searched.

Answer 1

sed -i 's!$strurl!$url!g' filename

这将是答案，因为url本身包含'/'作为分隔符，因此我们需要在sed命令中使用其他分隔符

Answer 2

You can use sed with option -i to change a file in-place.

sed -i 's/what/towhat/g' filename.txt

In case your what contains slashes ( / ) itself, use any other character (eg , ) which does not appear in the what or the towhat .