How could I use shell script to parse a "keyword" from a config file like this:

```
keyword1='aaa
bbb
ccc
'
keyword2='ddd'

```

there are multi line of this value, and I want to get each line of it.

--------------------- updating

Sorry for the unclear description.
As we can see, the format of this config file is just like "key=value", I could parse a value of the keyword that has a single value easily. But I have no idea about parsing a keyword that has multi values, e.g. keyword1 as above.