I have the following emails.txt with:
[email protected]
[email protected]
[email protected];es
[email protected]
[email protected]
@pepito.com
And a sed command to get
sed -n -r '/\w+@\w+\.\w+((\.\w+)*)?/p' emails.txt
[email protected]
[email protected]
But, it keeps displaying email with more than one .com
I don't want these emails :
[email protected]
[email protected];es
[email protected]
@pepito.com
I'm stuck here and I have no clue about how to get it.
With sed, you could do:
$ sed -nr '/^[^@]+@[^.]+\.com\s*$/p' file
[email protected]
[email protected]
The regex looks for one or more non-@ characters at the beginning of the line, then a @, then one or more non-. characters followed by .com and then 0 or more whitespace.
Other choices:
Perl
perl -ne 'print if /^[^@]+@[^.]+\.com\s*$/' file
GNU grep
grep -P '^[^@]+@[^.]+\.com\s*$' file
POSIX grep
grep -E '^[^@]+@[^.]+\.com\s*$' file
awk
awk '$0~/^[^@]+@[^.]+\.com\s*$/' file
egrep, that's been deprecated in favor of grep -E (see man grep).
I would use something like this :
sed -n -r '/\w+@\w+\.com$/p' emails.txt
[email protected]
[email protected]
It will retrieve every email in format [email protected]
In case you need something more "universal" and not only .com but also .fr or .uk you can use :
sed -n -r '/\w+@\w+\.\w+$/p' emails.txt
This will retrieve every email in format [email protected]
The expression ((\.\w+)*)? matches additional sequences of the form .xyz after the first domain. If you want to match only those addresses with a single domain, then you can enforce that by replacing it with $ or (more robustly) \s*$
sed -n -r '/\w+@\w+\.\w+\s*$/p' emails.txt
to require that there is nothing (except possibly whitespace) between the first domain and the end of the line.
[email protected]? Why do you want@pepito.com? How about[email protected]? Are you trying to match only addresses whose domain isfoo.comand nothing else?