Time Machine backup destination on SMB network share (within a sparse bundle on that share). Actually how is the Verify Backup operation (mac's System Preferences > Time Machine > backup destination contextual menu + option key depressed > Verify Backup) implemented ? Is this something like this ? Code: sudo hdiutil attach ... followed by Code: sudo fsck_hfs .... followed by Code: sudo hdiutil detach .... Any other fashion? Maybe just and only: Code: hdiutil verify .... Neee, last one can't actually be as images with write access do not seem to include checksums used by hdiutil verify .... - according to hdiutil man page. We plan to implement a replica of Verify Backup in shell script however lack information how reproduce it in shell script language. Is it possible to use mac's console to see lower-level operations resulting from choosing Verify Backup option? What to search for there?