How to run gpg from a script run by cron?

Question

I have a script that has a part that looks like that:

for file in `ls *.tar.gz`; do
  echo encrypting $file
  gpg --passphrase-file /home/$USER/.gnupg/backup-pas         


        

Answer 1

In my case: "gpg: decryption failed: Bad session key".

Tried adding /usr/bin/gpg, checking the version, setting --batch, setting --home (with /root/.gnupg and /home/user/.gnupg) and all did not work.

/usr/bin/gpg -d --batch --homedir /home/ec2-user/.gnupg --no-mdc-warning -quiet --passphrase "$GPG_PP" "$file"

Turned out that cron on AWS beanstalk instance needed the environment variable being used to set the --passphrase $GPG_PP. Cron now:

0 15 * * * $(source /opt/elasticbeanstalk/support/envvars && /home/ec2-user/bin/script.sh >> /home/ec2-user/logs/cron_out.log 2>&1)