timmy revised this gist 19 hours ago. Go to revision
1 file changed, 22 insertions
change_hostname.sh(file created)
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| 1 | + | #!/bin/bash | |
| 2 | + | ||
| 3 | + | # 1. 取得目前的內網 IP (以預設網卡為主) | |
| 4 | + | INTERNAL_IP=$(hostname -I | awk '{print $1}') | |
| 5 | + | ||
| 6 | + | if [ -z "$INTERNAL_IP" ]; then | |
| 7 | + | echo "錯誤: 無法取得 IP 位址" | |
| 8 | + | exit 1 | |
| 9 | + | fi | |
| 10 | + | ||
| 11 | + | # 2. 將 IP 中的句點換成連字號，並加上 ip- 前綴 | |
| 12 | + | NEW_HOSTNAME="ip-${INTERNAL_IP//./-}" | |
| 13 | + | ||
| 14 | + | echo "即將將 Hostname 改為: $NEW_HOSTNAME" | |
| 15 | + | ||
| 16 | + | # 3. 執行修改指令 | |
| 17 | + | sudo hostnamectl set-hostname "$NEW_HOSTNAME" | |
| 18 | + | ||
| 19 | + | # 4. 更新 /etc/hosts，確保 sudo 等指令不會變慢 | |
| 20 | + | sudo sed -i "s/127.0.1.1.*/127.0.1.1 $NEW_HOSTNAME/" /etc/hosts | |
| 21 | + | ||
| 22 | + | echo "修改完成！請重新登入或執行 'exec bash' 查看效果。" | |
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