Sync 2.0

This is a simple command-line utility for one-way directory synchronization, written in Java Sync is a simple command-line utility for one-way directory synchronization, written in Java.
Sync synchronizes the contents of a specified target directory to match a specified source directory. Only the target directory is modified. Runs on any OS with the Java Runtime Environment (JRE 5.0+). Sync is free software written in Java and released under the GNU GPL license.
Main features:
- FLEXIBLE FILE MATCHING: Match files by any combination of name, size, last-modified time, and CRC-32 checksum; by default, (name,size,CRC) is used.
- FLEXIBLE FILE TIME COMPARISON: Specify a time allowance (in number of seconds) when matching files by their last-modified time.
- SIMULATION MODE: Sync can be run to simulate file operations, so that the target directory is not modified.
- UNATTENDED USAGE: With an appropriate choice of switches, Sync can be executed without user intervention
System requirements:
- Java Runtime Environment 6+