decrypt.sh

#!/bin/bash




# Configurations
PASSPHRASE=''
LOG_FILE='./log'




# Helper functions
start_message()
{
  echo -n $(date +'%Y-%m-%d %H:%M:%S: ') "${1}... "
}

end_message()
{
  echo 'Finished'
}

# Exit if not root
if [[ `id -u` != 0 ]]; then
  echo 'Error: You should run this script as super user'
  exit
fi

# Exit if no backup file was passed
[ -z "$1" ] && echo 'No file supplied!' && exit 1

fullname=$1 # Full file name
filename=`basename $1` # Extracts file name from path
filename="${filename%.*}" # Remove file extension from file name

# Decrypt the file
start_message "Decrypting '${filename}'"
echo $PASSPHRASE | gpg --batch --passphrase-fd 0 --output "./${filename}.tar.gz" --decrypt ${fullname} &>> "$LOG_FILE"
end_message

# Extract decrypted file
start_message 'Extracting decrypted file'
[ -d "./${filename}" ] || mkdir "./${filename}" # Create extraction target directory
tar -xzf "./${filename}.tar.gz" -C "./${filename}" &>> "$LOG_FILE" # Extract decrypted file
end_message

# Delete compressed file
#rm "./${filename}.tar.gz"