Extract md5 hashes in text and use hashcat to crack with mask attack

hashcat_md5_crack.sh

#!/bin/bash

# hashes only:
#grep -Eo "\b[a-f0-9]{32}\b" hashes.txt > md5-hashes.txt

# Mails:Hashes extract from your textfile:
sed -nE "s/.*'([a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,})'.*'([a-f0-9]{32})'.*/\1:\2/p" your_text_file.txt > mail-md5.txt

# Crack hashes with usernames:
hashcat -a0 -m0 --username --potfile-path mail_md5.potfile mail-md5.txt /usr/share/wordlists/rockyou.txt.gz

# Masked bruteforce attack length 8 , a-zA-Z0-9:
hashcat -a3 -m0 --username --potfile-path mail_md5.potfile mail-md5.txt -i -1 ?l?d?U ?1?1?1?1?1?1?1?1

# Set usernames and plain passwords:
hashcat -a0 -m0 --username --potfile-path mail_md5.potfile --show -o mail_md5_out.txt --outfile-format 2 mail-md5.txt

exit 0;