Bash Command 4 Luks Header Backup

bashmagic_luks

cat /etc/crypttab |\
grep uuid |\
sed -r 's/[\t ]+/ /g' |\
cut -d ' ' -f 2 |\
while read line; do 
  dev=$(ls -la $line); 
  ser=$(smartctl -a $line | grep 'Serial Number'); 
  cryptsetup \
    luksHeaderBackup /dev/${dev##*/} \
    --header-backup-file \
    /mnt/usb/luks-header_${ser##* }_$(( 0 + 0${dev##*/sd[a-z]} )); 
done