unifios-utilities/on-boot-script/examples/udm-files/on_boot.d/15-add-root-ssh-keys.sh

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#!/bin/sh
## Places public keys in ~/.ssh/authorized_keys
KEYS_SOURCE_FILE="/mnt/data/on_boot.d/settings/ssh/authorized_keys"
KEYS_TARGET_FILE="/root/.ssh/authorized_keys"
count_added=0
count_skipped=0
while read -r key; do
# Places public key in ~/.ssh/authorized_keys if not present
if ! grep -Fxq "$key" "$KEYS_TARGET_FILE"; then
let count_added++
echo "$key" >> "$KEYS_TARGET_FILE"
else
let count_skipped++
fi
done < "$KEYS_SOURCE_FILE"
echo "${count_added} keys added to ${KEYS_TARGET_FILE}"
if [ $count_skipped -gt 0 ]; then
echo "${count_skipped} already added keys skipped"
fi
# Convert ssh key to dropbear for shell interaction
echo "Converting SSH private key to dropbear format"
dropbearconvert openssh dropbear /mnt/data/ssh/id_rsa /root/.ssh/id_dropbear
exit 0