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Top Forums UNIX for Dummies Questions & Answers Inode: is it both unique and 'permanent'? Post 302512820 by methyl on Monday 11th of April 2011 04:47:20 PM
Old 04-11-2011
There is a list of the fields held in an inode in "man inode".

Running a basic editor such as "vi" to change the contents of a file will change the inode number of that file. Try it.
Code:
ls -lisad filename
vi filename
ls -lisad filename

The point was made above but it is very important to understand that inode numbers are only unique within a filesystem. If you are searching for inodes using "find /filesystem -inum" always use the "-xdev" switch to confine your search to that filesystem.
 

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CLRI(8) 						    BSD System Manager's Manual 						   CLRI(8)

NAME
clri -- clear an inode SYNOPSIS
clri special_device inode_number ... DESCRIPTION
Clri is obsoleted for normal file system repair work by fsck(8). Clri zeros out the inodes with the specified inode number(s) on the filesystem residing on the given special_device. The fsck(8) utility is usually run after clri to reclaim the zero'ed inode(s) and the blocks previously claimed by those inode(s). Both read and write permission are required on the specified special_device. The primary purpose of this routine is to remove a file which for some reason is not being properly handled by fsck(8). Once removed, it is anticipated that fsck(8) will be able to clean up the resulting mess. SEE ALSO
fsck(8), fsdb(8), icheck(8), ncheck(8) BUGS
If the file is open, the work of clri will be lost when the inode is written back to disk from the inode cache. 4th Berkeley Distribution April 19, 1994 4th Berkeley Distribution
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