mirror of
https://github.com/spiritLHLS/one-click-installation-script.git
synced 2024-11-16 11:52:19 +08:00
94 lines
3.7 KiB
Bash
94 lines
3.7 KiB
Bash
#!/bin/bash
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#by spiritlhl
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#from https://github.com/spiritLHLS/one-click-installation-script
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#version: 2022.12.18
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red(){ echo -e "\033[31m\033[01m$1$2\033[0m"; }
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green(){ echo -e "\033[32m\033[01m$1$2\033[0m"; }
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yellow(){ echo -e "\033[33m\033[01m$1$2\033[0m"; }
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reading(){ read -rp "$(green "$1")" "$2"; }
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head() {
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# 支持系统：Ubuntu 12+，Debian 6+
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ver="2022.12.18"
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changeLog="修复sudo: unable to resolve host警告"
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clear
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echo "#######################################################################"
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echo "# ${YELLOW}修复sudo: unable to resolve host xxx: Name or service not known警告${PLAIN} #"
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echo "# 版本：$ver #"
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echo "# 更新日志：$changeLog #"
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echo "# ${GREEN}作者${PLAIN}: spiritlhl #"
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echo "# ${GREEN}作仓库${PLAIN}: https://github.com/spiritLHLS/one-click-installation-script #"
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echo "#######################################################################"
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echo "支持系统：Ubuntu 18+，Debian 8+，centos 7+，Fedora，Almalinux 8.5+"
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echo "检测修复sudo: unable to resolve host xxx: Name or service not known爆错"
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# Display prompt asking whether to proceed with fixing
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reading "Do you want to proceed with fixing? [y/n] " confirm
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echo ""
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# Check user's input and exit if they do not want to proceed
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if [ "$confirm" != "y" ]; then
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exit 0
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fi
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}
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# Check if the hostname is set correctly in /etc/hosts
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HOSTNAME=$(cat /etc/hostname)
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HOSTS_LINE="$(grep $HOSTNAME /etc/hosts)"
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if [ -z "$HOSTS_LINE" ]; then
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# Hostname not found in /etc/hosts. Add it.
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yellow "Updating /etc/hosts with hostname: $HOSTNAME"
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echo "127.0.0.1 $HOSTNAME" | sudo tee -a /etc/hosts
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else
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# Hostname found in /etc/hosts. Check if the IP address is correct.
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HOSTS_IP="$(awk '{print $1}' <<<$HOSTS_LINE)"
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if [ "$HOSTS_IP" != "127.0.0.1" ]; then
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# IP address is incorrect. Update it.
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yellow "Updating IP address for $HOSTNAME in /etc/hosts"
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temp_file=$(mktemp)
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backup_file="/etc/hosts-$(date +%Y%m%d%H%M%S).bak"
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cp /etc/hosts "$backup_file"
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yellow "Backed up /etc/hosts to $backup_file"
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awk -v new_ip="127.0.0.1" -v hostname="$HOSTNAME" '{ if ($2 == hostname) { print new_ip " " $2 } else { print $0 } }' /etc/hosts > "$temp_file"
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cp "$temp_file" /etc/hosts
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rm "$temp_file"
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else
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# Hostname and IP address are correct. No changes needed.
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green "Hostname and IP address in /etc/hosts are correct."
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fi
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fi
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# Check if the sudo command works
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sudo yellow "Testing sudo command..."
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if [ $? -eq 0 ]; then
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# Sudo command works. Exit the script.
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green "Fix successful. Exiting script."
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else
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# Sudo command failed. Try restarting the networking interface.
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yellow "Sudo command still failing. Restarting networking interface."
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sudo service networking restart
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# Check if the sudo command works after restarting the networking interface
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sudo echo "Testing sudo command after restarting networking interface..."
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if [ $? -eq 0 ]; then
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# Sudo command works. Exit the script.
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green "Fix successful. Exiting script."
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else
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# Sudo command failed. Try restarting the DNS server.
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yellow "Sudo command still failing. Restarting DNS server."
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sudo service bind9 restart
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# Check if the sudo command works after restarting the DNS server
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sudo echo "Testing sudo command after restarting DNS server..."
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if [ $? -eq 0 ]; then
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# Sudo command works. Exit the script.
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green "Fix successful. Exiting script."
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else
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# Sudo command still failing. Exiting script.
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red "Unable to fix problem. Exiting script."
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fi
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fi
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fi
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