Question

I need to search in a file like a hash. Wondering if awk is right solution

Input example:

bla   123.123.123.0
# This line should be a comment
ble      www.ble.com
bli  <random whitespace> ::1
blo   anything

I need two different outputs depending on the context:

Get keys:

bla ble bli blo

And search(ble)

www.ble.com

I was hoping that this is trivial with awk

Edit: Improved description for input format

Answer 1

One way like this(not very clear with requirement):

$ awk '!/^#/{a[$1]=$2}END{print a[x];}' x='ble' file
www.ble.com