diskimage-builder/elements/redhat-common/finalise.d/99-setup-first-boot

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#!/bin/bash
set -eu
set -o pipefail
if [ -d /etc/first-boot.d ]; then
rc_local=/etc/rc.d/rc.local
FILE_EXISTED=
if [ -f $rc_local ]
then
FILE_EXISTED=1
mv $rc_local $rc_local.REAL
fi
dd of=$rc_local <<EOF
#!/bin/bash
set -e
set -o xtrace
dib-first-boot
EOF
if [ $FILE_EXISTED ]
then
echo "mv $rc_local.REAL $rc_local" >> $rc_local
else
echo "rm \$0" >> $rc_local
fi
echo "exit 0" >> $rc_local
chmod 755 $rc_local
# Enable the service
systemctl enable rc-local.service
fi