mirror of https://github.com/stilleshan/code.git
98 lines
2.4 KiB
Bash
Executable File
98 lines
2.4 KiB
Bash
Executable File
#!/usr/bin/env bash
|
||
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
|
||
export PATH
|
||
|
||
# fonts color
|
||
Green="\033[32m"
|
||
Red="\033[31m"
|
||
Yellow="\033[33m"
|
||
GreenBG="\033[42;37m"
|
||
RedBG="\033[41;37m"
|
||
Font="\033[0m"
|
||
# fonts color
|
||
|
||
|
||
#root权限
|
||
root_need(){
|
||
if [[ $EUID -ne 0 ]]; then
|
||
echo -e "${Red}Error:This script must be run as root!${Font}"
|
||
exit 1
|
||
fi
|
||
}
|
||
|
||
#检测ovz
|
||
ovz_no(){
|
||
if [[ -d "/proc/vz" ]]; then
|
||
echo -e "${Red}Your VPS is based on OpenVZ，not supported!${Font}"
|
||
exit 1
|
||
fi
|
||
}
|
||
|
||
add_swap(){
|
||
echo -e "${Green}请输入需要添加的 Swap 值,单位为 MB ,建议为内存的 2 倍.(例如输入:4096)${Font}"
|
||
read -p "请输入 Swap 数值:" swapsize
|
||
|
||
#检查是否存在swapfile
|
||
grep -q "swap" /etc/fstab
|
||
|
||
#如果不存在将为其创建swap
|
||
if [ $? -ne 0 ]; then
|
||
echo -e "${Green}swapfile 未发现，正在为其创建 swapfile${Font}"
|
||
dd if=/dev/zero of=/swapfile bs=1M count=${swapsize}
|
||
chmod 600 /swapfile
|
||
mkswap /swapfile
|
||
swapon /swapfile
|
||
echo '/swapfile none swap defaults 0 0' >> /etc/fstab
|
||
echo -e "${Green}swap 创建成功，并查看信息：${Font}"
|
||
cat /proc/swaps
|
||
cat /proc/meminfo | grep Swap
|
||
else
|
||
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}"
|
||
fi
|
||
}
|
||
|
||
del_swap(){
|
||
#检查是否存在swapfile
|
||
grep -q "swap" /etc/fstab
|
||
|
||
#如果存在就将其移除
|
||
if [ $? -eq 0 ]; then
|
||
echo -e "${Green}swapfile 已发现，正在将其移除...${Font}"
|
||
sed -i '/swap/d' /etc/fstab
|
||
echo "3" > /proc/sys/vm/drop_caches
|
||
swapoff -a
|
||
rm -f /swapfile
|
||
echo -e "${Green}swap 已删除！${Font}"
|
||
else
|
||
echo -e "${Red}swapfile 未发现，swap 删除失败！${Font}"
|
||
fi
|
||
}
|
||
|
||
#开始菜单
|
||
main(){
|
||
root_need
|
||
ovz_no
|
||
clear
|
||
echo -e "———————————————————————————————————————"
|
||
echo -e "${Green}一键添加/删除swap脚本${Font}"
|
||
echo -e "${Green}1、添加swap${Font}"
|
||
echo -e "${Green}2、删除swap${Font}"
|
||
echo -e "———————————————————————————————————————"
|
||
read -p "请输入数字 [1-2]:" num
|
||
case "$num" in
|
||
1)
|
||
add_swap
|
||
;;
|
||
2)
|
||
del_swap
|
||
;;
|
||
*)
|
||
clear
|
||
echo -e "${Green}请输入正确数字 [1-2]${Font}"
|
||
sleep 2s
|
||
main
|
||
;;
|
||
esac
|
||
}
|
||
main
|