AWK How To Ignore Case
Ignoring case is easy when you’re using AWK for string matching.
Just set the IGNORECASE variable to 1 and you should be all set. In this example we match the string “abc” in either uppercase or lowercase.
awk 'BEGIN {IGNORECASE = 1}/abc/{print}' data.txt
The output might look like this:
abc xyz edw abc
ABC XYZ EDW ABC