Regular expression to match a pattern inside awk command

Question

I need to write a regular expression to match the following pattern :

fltr_desc_name

that is.. "fltr" followed by an underscore followed by any number of words separated by underscore.

for example: I need a regular expression to match the following :

fltr_desc_name
fltr_nameone_nametwo
fltr_level_name_desc

and I am using it inside an "if" statement in "awk": for ex:

awk '/Transformation/ { if ($4=="Filter" && $5=="fltr_*") print $4,$5 }' filename  

please help me in writing the regular expression and tell me how to use regular expression inside an "if" condition inside "awk" command. Thank you.

Answer 1

Need to use tilde character ~/ / in matching regular expressions in awk, i.e.

if ($5 ~ /fltr_*/)