Batch Script - Return Code - By default when a command line execution is completed it should either return zero when execution succeeds or non-zero when execution fails.
Just installed the beta of High Sierra on a mid-2014 macbook pro. System booted successfully first time. I routinely check that the FS has survived the upgrade process, so fired up disk utility and ran first aid on my newly converted APFS internal add (pci-e). I opened up Disk Utility, and the hard drive shows in there. I tried doing a "Verify Disk" and it gave me the "File System Check Exit Code 8" and told me to repair the disk. I tried repairing the disk, but it said that it could not be repaired. Is there anything else I can do to fix this? If my python script calls sys.exit(0) the shell returns 'OK' If my python script calls sys.exit(1) (or any non-zero integer), the shell returns 'Not OK' It's your job to get clever with the shell, and read the documentation (or the source) for your script to see what the exit codes mean.
In theory, exit code 0 means "No errors found, or successfully repaired" - though I don't know why it has then failed to complete & light the Done button. Exit code 8 was "A corrupt filesystem was found during a check, or repairs did not succeed." which would not really be surprising if you were trying to work on the partition you were booted from.
Check the ScanState log file for migration .xml file errors. Failed to start main processing, look in log for system errors or check the installation. Check the ScanState log file for migration .xml file errors. Migration failed because of an XML error; look in the log for specific details. Check the ScanState log file for migration .xml file ...
Some return codes are triggered by the problems that are signaled by the operating system. These are the return codes greater than 128. To check what is the system signal , use the following calculation: return code - 128 = operating system signal. To identify the issue, check the meaning of the signal in the operating system documentation.

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You can check all the filesystems in a single run of fsck using this option. This checks the file system in the order given by the fs_passno mentioned for each filesystem in /etc/fstab. Please note that the filesystem with a fs_passno value of 0 are skipped, and greater than 0 are checked in the order.
The exit code returned when multiple filesystems are checked is the bit-wise OR of the exit codes for each filesystem that is checked! Examples of fsck commands. As mentioned earlier, you should NEVER run fsck on a mounted filesystem. First, we will display all mounted filesystems.
Dec 20, 2014 · $ fish -c 'exit' $ diskutil verifyVolume Macintosh\ HD Started file system verification on disk0s2 Macintosh HD Verifying file system Using live mode Performing live verification Checking Journaled HFS Plus volume Checking extents overflow file Checking catalog file Checking multi-linked files Incorrect number of file hard links Checking ...
Sep 02, 2014 · In the above revision of our sample script; if the exit code for touch is 0 the script will echo a successful message. If the exit code is anything other than 0 this indicates failure and the script will echo a failure message to stderr. Execution: $ ./tmp.sh Could not create file Providing your own exit code
exit 0 as the last line of code. It simply means "exit the script" with no errors found. And when you click on the "Verify Disk" button in Disk Utility, all it's doing is running a script that calls the fsck (file system check) command line tool in a script, what you're seeing in the log is the output of that script completing.
Jun 16, 2008 · I have just spent most of an entire day experimenting with RoboCopy, ending, in great frustration, having confirmed that the documentation of exit code 0x00 is WRONG. I can prove, by way of RoboCopy's own logs, that successfully copying of a new file returns exit code ZERO, not one, as claimed in the documentation here and at
Batch Script - Return Code - By default when a command line execution is completed it should either return zero when execution succeeds or non-zero when execution fails.
Just installed the beta of High Sierra on a mid-2014 macbook pro. System booted successfully first time. I routinely check that the FS has survived the upgrade process, so fired up disk utility and ran first aid on my newly converted APFS internal add (pci-e).
Sep 02, 2014 · In the above revision of our sample script; if the exit code for touch is 0 the script will echo a successful message. If the exit code is anything other than 0 this indicates failure and the script will echo a failure message to stderr. Execution: $ ./tmp.sh Could not create file Providing your own exit code