Capture Numbers in File and Save Answer (Linux)

Question

I have a file with the following data:

XXZ 000000000000012 MARCIO
XXZ 000000000000022 NILSON
XXZ 000000000000032 WALTER
XXZZZ 000000000000042 CARLOS
XXXZZZ 000000000000000 MARIA

I would like to skip the first characters and capture after space the numbers and save in a file with the answer.

Answer 1

sed -r 's/.* ([0-9]{14}).*/\1/' exemplo > saida

where:

• .* takes a string completed by space
• ([0-9]{14}) pick and hold (in 1) a sequence of 14 digits
• .* catch the rest of the line
• s/.../\1/ and replaces the previous ones with the quard digits

By the way using grep we can search and extract sequences of 14 digits

grep -Po '\d{14}' exemplo > saida