SERIES : awk#2 Simple Patterns

cat monkey
Monkey Mink
100 Tree Blvd
Banana County
Monkeyville, MY
Zip 12001
555133 Area 255

Get lines that have a digit anywhere.

awk '/[0-9]+/ {print "Has a digit. : ", $0}' monkey
Has a digit. :  100 Tree Blvd
Has a digit. :  Zip 12001
Has a digit. :  555133 Area 255

Get lines that begin with a digit

awk '/^[0-9]+/ {print "Begins with digit. : ", $0}' monkey
Begins with digit. :  100 Tree Blvd
Begins with digit. :  555133 Area 255

Has characters somewhere

awk '/[aA-zZ]+/ {print "Has a word. : ", $0}' monkey
Has a word. :  Monkey Mink
Has a word. :  100 Tree Blvd
Has a word. :  Banana County
Has a word. :  Monkeyville, MY
Has a word. :  Zip 12001
Has a word. :  555133 Area 255

Has only letters

awk '/^[aA-zZ]+$/ {print "Has only letters. : ", $0}' monkey
<-- no output -->

Because space is not counted as letters.