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AsmanZiba / repository

Timezone-Generator

Timezone Generator is a lightweight, portable toolkit designed to extract, compile, and manage timezone data from official tzdb releases. Built using Bash and Java, it offers seamless execution in Linux, Termux, and Android environments.

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README preview

📦 Overview

Timezone Generator is a fully portable tool for compiling timezone data from official tzdb sources. It uses Bash for automation and Java for compacting zoneinfo formats, and supports easy deployment in Termux, Linux, and Android (without root access).

⚙️ Features

🌍 Auto-Download and builds any tzdata version (e.g. 2025b)
🔧 Automatic environment detection (Termux / Linux)
☕ Java-based compaction of zoneinfo data
📤 Configurable output paths (/sdcard for Termux, local for Linux)
🔁 Customizable tzdata version via script
📄 Generates structured setup file using Zone and Link directives
🛡️ Lightweight and dependency-aware install script
💬 Interactive output and error handling

Android Support

You can build timezone files directly in Android using Termux.
If your device is rooted, output files can be copied to:

Old Android Version 9 and lower

/system/usr/share/zoneinfo/

New Android Version 10 And Upper

/apex/com.android.tzdata/etc/tz/

⚠️ Root access is required to write to this system directory.
Use with caution and ensure backups before replacing timezone files.

🧠 Environment Support

Platform	Status	Output Destination
Termux	✅ Supported	/sdcard/TimezoneFiles
Linux	✅ Supported	/usr/share/zoneinfo

Automatic detection ensures scripts behave appropriately per environment.

💡 Customization

You can change the tzdata version by editing:

VERSION=2025b

Other options:

Modify build and output paths

Note: Modify Only Version Variable. It is better not to change the other variables.

📚 References

-IANA Time Zone Database

-Time Zone Fixer

🚀 Getting Started

this is script is auto detect your time zone system.

Usage

For Android

install Termux:

run

bash DetectFormat.sh

Output into /sdcard/TimezoneFiles

Example (with root):

ZoneInfo format

su -c cp /sdcard/TimezoneFiles/* /system/usr/share/zoneinfo/

TzData format

su -c cp /sdcard/TimezoneFiles/* /apex/com.android.tzdata/etc/tz

For Linux (Debian/Ubuntu):

only run

Note: Check the route to be valid.

bash DetectFormat.sh

🧑‍💻 Author

Developed by Asman — blending scripting precision with system-level insight.
Open to collaboration, feedback, and suggestions ✨