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IntegrityChecker Java (icj) Version 2.02 Now Available

re: IntegrityChecker Java
re:data integrity
re: Validating Data Transfer/Copy Before Deleting the Source/Original Data: diglloydTools IntegrityChecker
re: Detecting Corruption / Validating Data Integrity Over Time and Across Drives and Backup/Restore
re: Reader Question on diglloydTools IntegrityChecker: “verify terabytes of content back and forth between the cloud and other local RAID drives I have”
re: Apple Core Rot: macOS Finder File Copying: Fails to Replace "dot files" When Replacing a folder = DATA LOSS
re: Detecting Data Corruption Caused by Bit Rot or Bad Drives or Software Bugs with diglloydTools IntegrityChecker

diglloydTools IntegrityChecker Java version 2.0 runs on any computer with Java—Mac, Windows, Linux, etc.

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More about IntegrityChecker and why every professional should be using it.

IntegrityChecker Java (icj) version 2.0.2

License and download page...

IntegrityChecker Java version 2.0.2 is now available for download. This release is a minor update.

  • 2022-01-02 Updated installJava.sh to install JDK 17.0.1, including choosing the Intel or Apple Silicon variant automatically.
  • 2022-01-01 Changed the 'sha' command to test hashing speed for a variety of thread counts, emitting a summary table when done. Can be used to characterize performance on different machines and/or tune performance expectations.
  • 2021-12-20 Added SHOW_RECENT_THROUGHPUT flag, which governs whether to show throughput over the past 5000 I/O requests, typically 3-5 seconds on fast SSD.
  • 2021-10-26 Changed the purge code (if invoked with 'sudo') to purge *at least* every N seconds rather than waiting N seconds after the prior purge. Better steady-state purging results. Added milliseconds to the "P" suffix when purges occur.

Documentation/help

See the online help for IntegrityChecker java.

If you need support, please copy/paste the text from the Terminal window—don’t send screen shots as they are very large and frequently contain too little information.

More about IntegrityChecker and why every professional should be using it.

Installation

For macOS users: run the install-icj.sh script. This will install icj and optionally also install Java. Please 'cd' to the directory containing the script first.

Or follow these instructions drag-n-drop instructions:

1. Open a Terminal window
2. Type "cd " (include the space after cd)
3. Drag the install folder to Terminal. It should now look something like this:
cd /Users/lloyd/Desktop/out/2022-0102-icj2_0_2
4. Press the RETURN key.
5. Enter the following, then press the RETURN key:
./install-icj.sh
6. Respond to the install questions, etc.

Installing on macOS — security permissions 

For macOS Catalina, macOS Big Sur, macOS Monterey, the icj installer will fail unless Terminal has full disk access. So first give Terminal full disk access, as shown here:

How to give Terminal full disk access

After Java is installed, Java must ALSO be given full disk access. The 'java' binary application will be found here after installation:

/Library/Java/JavaVirtualMachines/openjdk-16.0.2.jdk/Contents/Home/bin/java

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