declare pick echo "========Other========" echo "1.开启BBR" echo "2.更换系统语言" echo "输入其他任意返回主页" echo "========Other========" read -p "请输入:" pick case "$pick" in '1') declare version=$(uname -r | awk -F "." '{print $1}') if ! [[ $version -ge 5 ]];then echo "系统内核版本过低" exit fi grep -q "net.core.default_qdisc=fq" "/etc/sysctl.conf" || echo 'net.core.default_qdisc=fq' | sudo tee -a "/etc/sysctl.conf" grep -q "net.ipv4.tcp_congestion_control=bbr" "/etc/sysctl.conf" || echo 'net.ipv4.tcp_congestion_control=bbr' | sudo tee -a "/etc/sysctl.conf" sudo sysctl -p || echo "bbr 开启失败" sysctl net.ipv4.tcp_available_congestion_control | grep bbr && echo "bbr 开启成功" ;; '2') declare lang echo "1.中文" echo "2.英文" read -p "请输入:" lang if [[ -f "/usr/bin/apt-get" ]];then sudo apt-get install -y locales elif [[ -f "/usr/bin/apt" ]];then sudo apt install -y locales else echo "暂不支持该系统一键更换语言" exit fi sudo sed -i '/^#/! s/^/# /' /etc/locale.gen if ! grep LC_ALL /etc/default/locale &> /dev/null; then echo "LC_ALL=en_US.UTF-8" >> /etc/default/locale fi case $lang in '1') sudo sed -i 's/.*zh_CN.UTF-8.*/zh_CN.UTF-8 UTF-8/g' /etc/locale.gen sudo sed -i "s/^LANG.*/LANG=zh_CN.UTF-8/g" /etc/default/locale sudo sed -i "s/^LC_ALL.*/LC_ALL=zh_CN.UTF-8/g" /etc/default/locale source /etc/default/locale sudo locale-gen update-locale echo "中文语言更换成功" ;; '2') sudo sed -i 's/.*en_US.UTF-8.*/en_US.UTF-8 UTF-8/g' /etc/locale.gen sudo sed -i "s/^LANG.*/LANG=en_US.UTF-8/g" /etc/default/locale sudo sed -i "s/^LC_ALL.*/LC_ALL=en_US.UTF-8/g" /etc/default/locale source /etc/default/locale sudo locale-gen update-locale echo "英文语言更换成功" ;; esac esac