1SYNC(8) 386BSD System Manager's Manual SYNC(8) 2 3NNAAMMEE 4 ssyynncc - synchronize internal filesystem information with that on the disk 5 6SSYYNNOOPPSSIISS 7 ssyynncc 8 9DDEESSCCRRIIPPTTIIOONN 10 SSyynncc can be called to insure that all disk writes have been completed 11 before the processor is halted in a way not suitably done by reboot(8) or 12 halt(8). Generally, it is preferable to use reboot or halt to shut down 13 the system, as they may perform additional actions such as 14 resynchronizing the hardware clock and flushing internal caches before 15 performing a final ssyynncc. 16 17 SSyynncc utilizes the sync(2) function call. 18 19SSEEEE AALLSSOO 20 sync(2), fsync(2), halt(8), reboot(8), update(8) 21 22HHIISSTTOORRYY 23 A ssyynncc command appeared in Version 6 AT&T UNIX. 24 254th Berkeley Distribution October 20, 1994 1 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67