Extract uniq emails sorted by domain from file.

0_README.md

Extract uniq emails sorted by domain from file.

Note that we ignore emails of the form xxx@yyy.com, i.e. if it has a '<' we ignore it.

Usage

$ extract_emails.zsh file_with_emails.txt
example@example.com
ex@ex.com
...

extract_emails.zsh

# Extract uniq emails sorted by domain from file.
# Note that we ignore emails of the form <xxx@yyy.com>, i.e. if it has a '<' we ignore it.
awk '{
  for (i=1;i<=NF;i++) {
       if ( $i ~ /[[:alpha:]]@[[:alpha:]]/ )  {
      print $i
       }
  }
}' $1 | sort | uniq | grep -v '<' | sort -t@ -k2 -r