Simple Bash encryption/decryption operation for cron purpose

decrypt.sh

# set the Default Static Variable 
# if already set Environment variable, please comment this section
SRC_PATH=/opt/b # src to read recommend full path
DEST_PATH=/opt/a # encrypted to

# assume that the expect output file format is .txt
# Also, make sure that you import the private key before running the file via
# gpg --import private.key

for FILE in $(ls *.gpg)
do
    if [[ -f ${FILE%.ctrl} ]]; then    # check ctrl file if not exist go to another one
        # encrypted then move to another folder
        # assume that the inputfile format is FILE.txt.gpg
        
        gpg --output ${DEST_PATH}/${FILE%.gpg}.test --decrypt ${SRC_PATH}/${FILE}
    fi
done

encrypt.sh

# set the Default Static Variable
# if already set Environment variable, please comment this section
SRC_PATH=/opt/a # src to read recommend full path
DEST_PATH=/opt/b # encrypted to
KEY=89B4CDB489D9414465325C792B86D253D77013CD # key ID

### Before doing anything please don't forget to import the key into gpg keyring first as shown below ###
# gpg --import public|private.key
# then find the public key id to fill in with
# gpg --list-keys

for FILE in $(ls *.txt)
do
    if [[ -f ${FILE%.txt}.ctrl ]]; then    # check ctrl file if not exist go to another one
        # encrypted then move to another folder
        gpg --output ${DEST_PATH}/$FILE.gpg --encrypt --recipient ${KEY} ${SRC_PATH}/$FILE
    fi
done