swap.sh(檔案已創建)
| @@ -0,0 +1,92 @@ | |||
| 1 | + | #!/usr/bin/env bash | |
| 2 | + | #Blog:https://www.moerats.com/ | |
| 3 | + | #https://www.moerats.com/archives/722/ | |
| 4 | + | #wget https://www.moerats.com/usr/shell/swap.sh && bash swap.sh | |
| 5 | + | ||
| 6 | + | Green="\033[32m" | |
| 7 | + | Font="\033[0m" | |
| 8 | + | Red="\033[31m" | |
| 9 | + | ||
| 10 | + | #root权限 | |
| 11 | + | root_need(){ | |
| 12 | + | if [[ $EUID -ne 0 ]]; then | |
| 13 | + | echo -e "${Red}Error:This script must be run as root!${Font}" | |
| 14 | + | exit 1 | |
| 15 | + | fi | |
| 16 | + | } | |
| 17 | + | ||
| 18 | + | #检测ovz | |
| 19 | + | ovz_no(){ | |
| 20 | + | if [[ -d "/proc/vz" ]]; then | |
| 21 | + | echo -e "${Red}Your VPS is based on OpenVZ，not supported!${Font}" | |
| 22 | + | exit 1 | |
| 23 | + | fi | |
| 24 | + | } | |
| 25 | + | ||
| 26 | + | add_swap(){ | |
| 27 | + | echo -e "${Green}请输入需要添加的swap，建议为内存的2倍！${Font}" | |
| 28 | + | read -p "请输入swap数值:" swapsize | |
| 29 | + | ||
| 30 | + | #检查是否存在swapfile | |
| 31 | + | grep -q "swapfile" /etc/fstab | |
| 32 | + | ||
| 33 | + | #如果不存在将为其创建swap | |
| 34 | + | if [ $? -ne 0 ]; then | |
| 35 | + | echo -e "${Green}swapfile未发现，正在为其创建swapfile${Font}" | |
| 36 | + | fallocate -l ${swapsize}M /swapfile | |
| 37 | + | chmod 600 /swapfile | |
| 38 | + | mkswap /swapfile | |
| 39 | + | swapon /swapfile | |
| 40 | + | echo '/swapfile none swap defaults 0 0' >> /etc/fstab | |
| 41 | + | echo -e "${Green}swap创建成功，并查看信息：${Font}" | |
| 42 | + | cat /proc/swaps | |
| 43 | + | cat /proc/meminfo | grep Swap | |
| 44 | + | else | |
| 45 | + | echo -e "${Red}swapfile已存在，swap设置失败，请先运行脚本删除swap后重新设置！${Font}" | |
| 46 | + | fi | |
| 47 | + | } | |
| 48 | + | ||
| 49 | + | del_swap(){ | |
| 50 | + | #检查是否存在swapfile | |
| 51 | + | grep -q "swapfile" /etc/fstab | |
| 52 | + | ||
| 53 | + | #如果存在就将其移除 | |
| 54 | + | if [ $? -eq 0 ]; then | |
| 55 | + | echo -e "${Green}swapfile已发现，正在将其移除...${Font}" | |
| 56 | + | sed -i '/swapfile/d' /etc/fstab | |
| 57 | + | echo "3" > /proc/sys/vm/drop_caches | |
| 58 | + | swapoff -a | |
| 59 | + | rm -f /swapfile | |
| 60 | + | echo -e "${Green}swap已删除！${Font}" | |
| 61 | + | else | |
| 62 | + | echo -e "${Red}swapfile未发现，swap删除失败！${Font}" | |
| 63 | + | fi | |
| 64 | + | } | |
| 65 | + | ||
| 66 | + | #开始菜单 | |
| 67 | + | main(){ | |
| 68 | + | root_need | |
| 69 | + | ovz_no | |
| 70 | + | clear | |
| 71 | + | echo -e "———————————————————————————————————————" | |
| 72 | + | echo -e "${Green}Linux VPS一键添加/删除swap脚本${Font}" | |
| 73 | + | echo -e "${Green}1、添加swap${Font}" | |
| 74 | + | echo -e "${Green}2、删除swap${Font}" | |
| 75 | + | echo -e "———————————————————————————————————————" | |
| 76 | + | read -p "请输入数字 [1-2]:" num | |
| 77 | + | case "$num" in | |
| 78 | + | 1) | |
| 79 | + | add_swap | |
| 80 | + | ;; | |
| 81 | + | 2) | |
| 82 | + | del_swap | |
| 83 | + | ;; | |
| 84 | + | *) | |
| 85 | + | clear | |
| 86 | + | echo -e "${Green}请输入正确数字 [1-2]${Font}" | |
| 87 | + | sleep 2s | |
| 88 | + | main | |
| 89 | + | ;; | |
| 90 | + | esac | |
| 91 | + | } | |
| 92 | + | main | |
上一頁
下一頁