check -- Command

Check file system
check [-s] filesystem ...

check uses  the commands icheck  and dcheck to  check the consistency  of a
file system.  It  acts on each argument filesystem in  turn; it calls first
icheck and then dcheck on each to detect problems.

If -s is specified, check attempts to repair any errors automatically.  You
should first unmount  the file system, if possible.  If  the root device is
involved,  you should  be in  single-user mode and  then reboot  the system
immediately (without typing sync).

See Also

clri,
commands,
icheck,
ncheck,
sync,
umount

Notes

Certain errors,  such as duplicated blocks,  cannot be fixed automatically.
Decisions must be made by a human.

In earlier releases of COHERENT, check  acted upon a default file system if
none was specified.

This command has largely been superceded by fsck.

© 2012 by Stephen A. Ness