How do I get value of variable from file using shell script?

Question

There is a file post_check.ini I need the value set for:

Max_value=2

How would I get the value 2 from Max_v

Answer 1

You might find it useful to use proper config file parser. Given the following .ini file:

$ cat post_check.ini
[section 1]
Max_value=123
[section 2]
Max_value=456

The following python script will print 123:

import ConfigParser, os
config = ConfigParser.ConfigParser()
config.read('post_check.ini')
print config.get('section 1','Max_value')

This is most reliable and modifiable way to go if you need to work with config files.