Validate ZIP code in Shell-Script

Question

I’m entering this world of regular expressions, I’m having a doubt, I read about metacharacters, etc. Well, I’m trying to validate a zip code and I’m using the following command and I’m not getting it.. i have already replaced d by [0-9] and succeeded, but so am not succeeding:

cat arquivo.txt | grep -E '^\d{5}[-]\d{3}'

In the.txt file you have the line: 02954-852

Grateful.

Answer 1

Thank you for answering, but the simplest solution was because d is not recognized by the -E parameter but by -P (Perl), the code looked like this:

cat arquivo.txt | grep -P '^\d{5}-\d{3}$'

But thank you very much for your attention.

Answer 2

On this site below there are good examples.

http://www.terminalroot.com.br/2015/01/shell-script-validandotele.html

echo 'Informe o CEP';
read CEP
echo $CEP | egrep '^[0-9]{5}[-][0-9]{3}$' && echo -e '\033[01;32m Número válido! \033[0m' || echo -e '\033[01;31m NÃO é válido esse número.\033[0m'

Answer 3

You may not have closed the expression with dollar sign: Example:

^\d{5}[-]\d{3}$