208 lines
7.2 KiB
Bash
208 lines
7.2 KiB
Bash
#!/bin/bash
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NO_FORMAT="\e[0m"
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F_BOLD="\e[1m"
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C_GREEN="\e[38;5;40m"
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C_RED="\e[38;5;9m"
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C_YELLOW="\033[38;5;226m"
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USER=$(getent passwd 1000 | cut -d: -f1)
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PC=$(uname -n | awk '{print $1}')
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guardband() {
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if [ $? -ne 0 ]; then
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echo -e "${C_YELLOW}Cleaning up temp directory for checksums...${NO_FORMAT}"
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rm -rf /.SSH/.temp
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sleep 2
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echo -e "${C_RED}Script Exited with an Error.${NO_FORMAT}"
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exit 1
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fi
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}
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verifycdn(){
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CDN="https://cdn.franscorack.com"
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echo -e "${C_YELLOW}Verifying CDN availability...${NO_FORMAT}"
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if ! wget --spider "$CDN" 2>/dev/null; then
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echo -e "${C_RED}Error: Cannot reach CDN for checksum verification - ${F_BOLD}Are you connected on the Internet ? / Is the CDN down ?${NO_FORMAT}"
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echo -e "${C_RED}Key-renewal script can only be ran if $CDN is reachable. Script Halted. ${NO_FORMAT}"
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return 1
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else
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echo -e "${C_GREEN}CDN available for checksum downloads - ${F_BOLD}Proceeding...${NO_FORMAT}"
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sleep 2
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fi
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}
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downloadpub(){
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wget -q https://cdn.franscorack.com/chksum/sshprov/pub -O /.SSH/.temp/pub
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if [ $? -ne 0 ]; then
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echo -e "${C_RED}Download error: CDN reported error in file download${NO_FORMAT}"
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return 1
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fi
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}
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downloadpriv(){
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wget -q https://cdn.franscorack.com/chksum/sshprov/priv -O /.SSH/.temp/priv
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if [ $? -ne 0 ]; then
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echo -e "${C_RED}Download error: CDN reported error in file download${NO_FORMAT}"
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return 1
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fi
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}
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rootcheck(){
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serversidePRIV=$(cat /.SSH/.temp/priv | awk '{print $1}')
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serversidePUB=$(cat /.SSH/.temp/pub | awk '{print $1}')
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rootPRIV=$(sha256sum /root/.ssh/id_ed25519 | awk '{print $1}')
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rootPUB=$(sha256sum /root/.ssh/authorized_keys | awk '{print $1}')
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echo Root User Check:
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if [ "$rootPRIV" = "$serversidePRIV" ]
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then
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echo -e "${C_GREEN}Private Keys Checksum against Server - ${F_BOLD}OK${NO_FORMAT} ${C_GREEN}- No action needed${NO_FORMAT}"
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chmod 700 /root/.ssh
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chmod 600 /root/.ssh/id_ed25519
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else
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echo -e "${C_RED}Private Keys Checksum against Server - ${F_BOLD}MISMATCH${NO_FORMAT} ${C_RED}- Provisioning... ${NO_FORMAT}"
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sleep 2
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rm /root/.ssh/id_ed25519
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cp --no-preserve=mode,ownership /.SSH/automated/priv/servers/id_ed25519 /root/.ssh/id_ed25519
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echo -e ${C_YELLOW}'key data from server -> local store'${NO_FORMAT}
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chmod 700 /root/.ssh
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chmod 600 /root/.ssh/id_ed25519
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echo -e ${C_YELLOW}'chmod -> local store'${NO_FORMAT}
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systemctl restart sshd
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echo -e ${C_YELLOW}'sshd restart'${NO_FORMAT}
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sleep 3
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rootPRIV2=$(sha256sum /root/.ssh/id_ed25519 | awk '{print $1}')
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if [ "$rootPRIV2" = "$serversidePRIV" ]
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then
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echo -e "${C_GREEN}${F_BOLD}CHECKSUM OK - PROVISION SUCCESS${NO_FORMAT}"
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else
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echo -e "${C_RED}${F_BOLD}CHECKSUM MISMATCH - MANUAL INTERVENTION REQUIRED${NO_FORMAT}"
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return 1
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fi
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fi
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if [ "$rootPUB" = "$serversidePUB" ]
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then
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echo -e "${C_GREEN}Public Keys Checksum against Server - ${F_BOLD}OK${NO_FORMAT} ${C_GREEN}- No action needed${NO_FORMAT}"
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chmod 700 /root/.ssh
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chmod 600 /root/.ssh/authorized_keys
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else
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echo -e "${C_RED}Public Keys Checksum against Server - ${F_BOLD}MISMATCH${NO_FORMAT} ${C_RED}- Provisioning... ${NO_FORMAT}"
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sleep 2
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rm /root/.ssh/authorized_keys
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cp --no-preserve=mode,ownership /.SSH/automated/pub/servers/id_ed25519.pub /root/.ssh/authorized_keys
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echo -e ${C_YELLOW}'key data from server -> local store'${NO_FORMAT}
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chmod 700 /root/.ssh
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chmod 600 /root/.ssh/authorized_keys
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echo -e ${C_YELLOW}'chmod -> local store'${NO_FORMAT}
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systemctl restart sshd
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echo -e ${C_YELLOW}'sshd restart'${NO_FORMAT}
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sleep 3
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rootPUB2=$(sha256sum /root/.ssh/authorized_keys | awk '{print $1}')
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if [ "$rootPUB2" = "$serversidePUB" ]
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then
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echo -e "${C_GREEN}${F_BOLD}CHECKSUM OK - PROVISION SUCCESS${NO_FORMAT}"
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else
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echo -e "${C_RED}${F_BOLD}CHECKSUM MISMATCH - MANUAL INTERVENTION REQUIRED${NO_FORMAT}"
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return 1
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fi
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fi
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}
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admincheck(){
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adminPRIV=$(sha256sum /home/$USER/.ssh/id_ed25519 | awk '{print $1}')
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adminPUB=$(sha256sum /home/$USER/.ssh/authorized_keys | awk '{print $1}')
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echo Admin User Check:
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if [ "$adminPRIV" = "$serversidePRIV" ]
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then
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echo -e "${C_GREEN}Private Keys Checksum against Server - ${F_BOLD}OK${NO_FORMAT} ${C_GREEN}- No action needed${NO_FORMAT}"
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chmod 700 /home/$USER/.ssh
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chmod 600 /home/$USER/.ssh/id_ed25519
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chown $USER -R /home/$USER/.ssh
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else
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echo -e "${C_RED}Private Keys Checksum against Server - ${F_BOLD}MISMATCH${NO_FORMAT} ${C_RED}- Provisioning... ${NO_FORMAT}"
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sleep 2
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rm /home/$USER/.ssh/id_ed25519
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cp --no-preserve=mode,ownership /.SSH/automated/priv/servers/id_ed25519 /home/$USER/.ssh/id_ed25519
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echo -e ${C_YELLOW}'key data from server -> local store'${NO_FORMAT}
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chmod 700 /home/$USER/.ssh
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chmod 600 /home/$USER/.ssh/id_ed25519
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chown $USER -R /home/$USER/.ssh
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echo -e ${C_YELLOW}'chmod -> local store'${NO_FORMAT}
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systemctl restart sshd
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echo -e ${C_YELLOW}'sshd restart'${NO_FORMAT}
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sleep 3
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adminPRIV2=$(sha256sum /home/$USER/.ssh/id_ed25519 | awk '{print $1}')
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if [ "$adminPRIV2" = "$serversidePRIV" ]
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then
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echo -e "${C_GREEN}${F_BOLD}CHECKSUM OK - PROVISION SUCCESS${NO_FORMAT}"
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else
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echo -e "${C_RED}${F_BOLD}CHECKSUM MISMATCH - MANUAL INTERVENTION REQUIRED${NO_FORMAT}"
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return 1
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fi
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fi
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if [ "$adminPUB" = "$serversidePUB" ]
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then
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echo -e "${C_GREEN}Public Keys Checksum against Server - ${F_BOLD}OK${NO_FORMAT} ${C_GREEN}- No action needed${NO_FORMAT}"
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chmod 700 /home/$USER/.ssh
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chmod 600 /home/$USER/.ssh/authorized_keys
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chown $USER -R /home/$USER/.ssh
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else
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echo -e "${C_RED}Public Keys Checksum against Server - ${F_BOLD}MISMATCH${NO_FORMAT} ${C_RED}- Provisioning... ${NO_FORMAT}"
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sleep 2
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rm /home/$USER/.ssh/authorized_keys
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cp --no-preserve=mode,ownership /.SSH/automated/pub/servers/id_ed25519.pub /home/$USER/.ssh/authorized_keys
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echo -e ${C_YELLOW}'key data from server -> local store'${NO_FORMAT}
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chmod 700 /home/$USER/.ssh
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chmod 600 /home/$USER/.ssh/authorized_keys
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chown $USER -R /home/$USER/.ssh
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echo -e ${C_YELLOW}'chmod -> local store'${NO_FORMAT}
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systemctl restart sshd
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echo -e ${C_YELLOW}'sshd restart'${NO_FORMAT}
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sleep 3
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adminPUB2=$(sha256sum /home/$USER/.ssh/authorized_keys | awk '{print $1}')
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if [ "$adminPUB2" = "$serversidePUB" ]
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then
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echo -e "${C_GREEN}${F_BOLD}CHECKSUM OK - PROVISION SUCCESS${NO_FORMAT}"
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else
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echo -e "${C_RED}${F_BOLD}CHECKSUM MISMATCH - MANUAL INTERVENTION REQUIRED${NO_FORMAT}"
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return 1
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fi
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fi
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}
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if [ "$UID" -ne 0 ]; then
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echo -e "${C_RED}This script must be run as root.${NO_FORMAT}"
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exit 1
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fi
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echo -e ${C_YELLOW}Warning: running this script resets known_hosts file. Abort this script using CTRL+C if you want to avoid that.${NO_FORMAT}
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sleep 3
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rm /home/$USER/.ssh/known_hosts
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rm /root/.ssh/known_hosts
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mkdir /.SSH/.temp
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if [ "$PC" = "pve01" ]
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then
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verifycdn
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guardband
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downloadpub
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guardband
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downloadpriv
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guardband
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rootcheck
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guardband
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else
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verifycdn
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guardband
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downloadpub
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guardband
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downloadpriv
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guardband
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rootcheck
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guardband
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admincheck
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guardband
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fi
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sleep 3
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echo -e "${C_YELLOW}Cleaning up temp directory for checksums...${NO_FORMAT}"
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rm -rf /.SSH/.temp
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sleep 2
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echo -e "${C_GREEN}Script execution completed.${NO_FORMAT}"
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