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Shell Programming and Scripting
Read from file specific place in file using inode
Post 302437306 by pludi on Wednesday 14th of July 2010 02:55:46 PM
07-14-2010
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LEARN ABOUT OPENSOLARIS
clri
clri(1M) System Administration Commands clri(1M) NAME
clri, dcopy - clear inode SYNOPSIS
clri [-F FSType] [-V] special i-number dcopy [-F FSType] [-V] special i-number DESCRIPTION
clri writes zeros on the inodes with the decimal i-number on the file system stored on special. After clri, any blocks in the affected file show up as missing in an fsck(1M) of special. Read and write permission is required on the specified file system device. The inode becomes allocatable. The primary purpose of this routine is to remove a file that for some reason appears in no directory. If it is used to zap an inode that does appear in a directory, care should be taken to track down the entry and remove it. Otherwise, when the inode is reallocated to some new file, the old entry will still point to that file. At that point, removing the old entry will destroy the new file. The new entry will again point to an unallocated inode, so the whole cycle is likely to be repeated again and again. dcopy is a symbolic link to clri. OPTIONS
-F FSType Specify the FSType on which to operate. The FSType should either be specified here or be determinable from /etc/vfstab by matching special with an entry in the table, or by consulting /etc/default/fs. -V Echo the complete command line, but do not execute the command. The command line is generated by using the options and argu- ments provided by the user and adding to them information derived from /etc/vfstab. This option should be used to verify and validate the command line. USAGE
See largefile(5) for the description of the behavior of clri and dcopy when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). FILES
/etc/default/fs Default local file system type /etc/vfstab List of default parameters for each file system ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
fsck(1M), vfstab(4), attributes(5), largefile(5) NOTES
This command might not be supported for all FSTypes. SunOS 5.11 16 Sep 1996 clri(1M)