3/15/72 CHECK (I)





3/15/72                                                 CHECK (I)





NAME            check -- file system consistency check



SYNOPSIS        check [ filesystem [ blockno  ... ] ]
                                            1


DESCRIPTION     check will examine a file system, build a bit map

                of used blocks, and compare this bit map against

                the bit map maintained on the file system.  If

                the file system is not specified, a check of all

                of the normally mounted file systems is per-

                formed.  Output includes the number of files on

                the file system, the number of these that are

                'large', the number of used blocks, and the num-

                ber of free blocks.



FILES           /dev/rf?, /dev/rk?, /dev/rp?



SEE ALSO        find(I), ds(I)



DIAGNOSTICS     Diagnostics are produced for blocks missing, du-

                plicated, and bad block addresses.  Diagnostics

                are also produced for block numbers passed as pa-

                rameters.  In each case, the block number, i-

                number, and block class (i = inode, x indirect, f

                free) is printed.



BUGS            The checking process is two pass in nature.  If

                checking is done on an active file system, extra-

                neous diagnostics may occur.



                The swap space on the RF file system is not ac-

                counted for and will therefore show up as `miss-

                ing'.



OWNER           ken, dmr
squoze.net
