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HenryQW/ssh-keyscan.sh

Last active April 6, 2018 12:45
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ssh-keyscan
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ssh-keyscan.sh
#!/bin/bash
if [ ! "${1}" ]
then
echo "Usage : ${0} TARGET_HOST"
exit 1
fi
TARGET_HOST="${1}"
KNOWN_HOSTS_FILE="${HOME}/.ssh/known_hosts"
if [ ! -f "${KNOWN_HOSTS_FILE}" ]
then
touch ${KNOWN_HOSTS_FILE}
chmod og-rwx ${KNOWN_HOSTS_FILE}
fi
echo "Remove existing fingerprint of ${1} if exists"
ssh-keygen -R ${1} 2>/dev/null
echo "Add fingerprint of ${1}"
ssh-keyscan ${TARGET_HOST} 2>/dev/null >> ${KNOWN_HOSTS_FILE}
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