1. 新建一个reset-trial-navicat.sh文件：

nano reset-trial-navicat.sh

2. 输入以下内容：

#!/bin/bash

set -e

file=$(defaults read /Applications/Navicat\ Premium.app/Contents/Info.plist)

regex="CFBundleShortVersionString = \"([^\.]+)"
[[ $file =~ $regex ]]

version=${BASH_REMATCH[1]}

echo "Detected Navicat Premium version $version"

case $version in
    "17"|"16")
        file=~/Library/Preferences/com.navicat.NavicatPremium.plist
        ;;
    "15")
        file=~/Library/Preferences/com.prect.NavicatPremium15.plist
        ;;
    *)
        echo "Version '$version' not handled"
        exit 1
       ;;
esac

echo "Reseting trial time..."

regex="([0-9A-Z]{32}) = "
[[ $(defaults read $file) =~ $regex ]]

hash=${BASH_REMATCH[1]}

if [ ! -z $hash ]; then
    echo "deleting $hash array..."
    defaults delete $file $hash
fi

regex="\.([0-9A-Z]{32})"
[[ $(ls -a ~/Library/Application\ Support/PremiumSoft\ CyberTech/Navicat\ CC/Navicat\ Premium/ | grep '^\.') =~ $regex ]]

hash2=${BASH_REMATCH[1]}

if [ ! -z $hash2 ]; then
    echo "deleting $hash2 folder..."
    rm ~/Library/Application\ Support/PremiumSoft\ CyberTech/Navicat\ CC/Navicat\ Premium/.$hash2
fi

echo "Done"

3. 修改sh文件权限：

chmod +x ./reset-trial-navicat.sh

4. 运行脚本

./reset-trial-navicat.sh

重新打开Navicat17，你会发现又可以14天试用，大功告成！