sync.1m (2010 09)

sync(1M) sync(1M)

NAME

sync - synchronize ﬁle systems

SYNOPSIS

sync [-l]

DESCRIPTION

sync executes the sync() system call (see sync (2)). If the system is to be stopped, the

sync command

must be called to ensure ﬁle system integrity.

sync ﬂushes all previously unwritten system buffers including modiﬁed super blocks, modiﬁed inodes,

and delayed block I/O out to disk. This ensures that all ﬁle modiﬁcations are properly saved before per-

forming a critical operation such as a system shutdown. For additional protection from power failures or

possible system crashes, use syncer to execute sync

automatically at periodic intervals (see

syncer (1M)).

AUTHOR

sync was developed by AT&T and HP.

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sync(1M) sync(1M) NAME sync - synchronize file systems SYNOPSIS sync [-l] DESCRIPTION sync executes the sync() system call (see sync (2)). If the system is to be stopped, the sync command must be called to ensure file system integrity. sync flushes all previously unwritten system buffers including modified super blocks, modified inodes, and delayed block I/O out to disk. This ensures that all file modifications are properly saved before performing a critical operation such as a system shutdown.
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(Notes) A (Notes) sA 2 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010