Match a specific number string

Define a file.txt file that contains the contents as follows

$Cat file. txt987-123-4567123 456 7890(123)456-7890222122-213-321 +231-456 7894321 984-4984(218)-393-3399(001)345-0000

Requires printing out a format such as (XXX) xxx-xxxx or xxx-xxx-xxxx. (x means a digit) line

Grep-e "[[:d igit:]][[:d igit:]][[:d igit:]]-[[:d igit:]][[:d igit:]][[:d igit:]]-[[:d igit:]][[:d igit:]][[:d igit:]][[ :d igit:]]| ([[:d igit:]][[:d igit:]][[:d igit:]]) [[:d Igit:]] [[:d Igit:]] [[:d igit:]]-[[:d igit:]][[:d igit:]][[:d igit:]][[:d igit:]] "file.txt

Get:

987-123-4567

321 984-4984

I can't find it.

(001) 345-0000

Grep-e "\ ([[:d igit:]][[:d igit:]][[:d igit:]]\) [[:d igit:]][[:d igit:]][[:d igit:]]-[[:d igit:]][[:d igit:]][[:d igit:] ][[:d igit:]]| [[:d Igit:]] [[:d Igit:]] [[:d igit:]]-[[:d igit:]][[:d igit:]][[:d igit:]]-[[:d igit:]][[:d igit:]][[:d igit:]][[:d igit:]] "file.txt

Get

987-123-4567

(123) 456-7890

(001) 345-0000

The parentheses are escaped, both sides of the brackets need to be escaped;

It seems so stupid, how many numbers you have to repeat [[:d igit:]]

This is a match of local conditions, such as 111 (001) 345-0000 can also be matched in; not exactly.

In other ways, use regular to match numbers

Cat File.txt | Grep-eo ' ^ (\ ([0-9]{3}\)) {1}[0-9]{3}-[0-9]{4}$|^ ([0-9]{3}-) {2}[0-9]{4}$ '

There are two matching criteria.

^ (\ ([0-9]{3}\)) {1}[0-9]{3}-[0-9]{4}$ match shape (123) 456-7890 phone number

^ ([0-9]{3}-) {2}[0-9]{4}$ matches a phone number like 987-123-4567

#using SED

Sed-n-E '/^ ([0-9]{3}-|\ ([0-9]{3}\)] [0-9]{3}-[0-9]{4}$/p ' file.txt

#using grep in Perl mode

Grep-p ' ^ (\d{3}-|\ (\d{3}\)) \d{3}-\d{4}$ ' file.txt

Match a specific number string