linecache and glob

[jo3c]

hi everyone happy new year!
im a newbie to python
i have a question
by using linecache and glob
how do i read a specific line from a file in a batch and then insert
it into database?

because it doesn't work! i can't use glob wildcard with linecache

>>> import linecache
>>> linecache.getline(glob.glob('/etc/*', 4)

doens't work

is there any better methods??? thank you very much in advance

jo3c