How to read text in blocks


 
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Old 11-12-2009
How to extract text blocks between spaces

Hi,

I have file which contains information written in blocks (every block is different). Is it possible to read every block one by one to another file (one block per file).

The input is something like this


<block1>
<empty line>
<block2>
<empty line>
...
...
...
<block25>
<empty line>
<block26>

I need to read <block1> to file.tmp. Make some manipulations with it and then rewrite the contents of file.tmp with <block2> make some manipulations with content of file.tmp and rewrite file.tmp with <block3> and initiate some manipulations with it. And so on....

Any ideas?

Last edited by art84_)LV; 11-12-2009 at 04:55 AM..
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ICHECK(1M)																ICHECK(1M)

NAME
icheck - file system storage consistency check SYNOPSIS
icheck [ -s ] [ -b numbers ] [ filesystem ] DESCRIPTION
Icheck examines a file system, builds a bit map of used blocks, and compares this bit map against the free list maintained on the file sys- tem. If the file system is not specified, a set of default file systems is checked. The normal output of icheck includes a report of The total number of files and the numbers of regular, directory, block special and character special files. The total number of blocks in use and the numbers of single-, double-, and triple-indirect blocks and directory blocks. The number of free blocks. The number of blocks missing; i.e. not in any file nor in the free list. The -s option causes icheck to ignore the actual free list and reconstruct a new one by rewriting the super-block of the file system. The file system should be dismounted while this is done; if this is not possible (for example if the root file system has to be salvaged) care should be taken that the system is quiescent and that it is rebooted immediately afterwards so that the old, bad in-core copy of the super- block will not continue to be used. Notice also that the words in the super-block which indicate the size of the free list and of the i- list are believed. If the super-block has been curdled these words will have to be patched. The -s option causes the normal output reports to be suppressed. Following the -b option is a list of block numbers; whenever any of the named blocks turns up in a file, a diagnostic is produced. Icheck is faster if the raw version of the special file is used, since it reads the i-list many blocks at a time. FILES
Default file systems vary with installation. SEE ALSO
dcheck(1), ncheck(1), filsys(5), clri(1) DIAGNOSTICS
For duplicate blocks and bad blocks (which lie outside the file system) icheck announces the difficulty, the i-number, and the kind of block involved. If a read error is encountered, the block number of the bad block is printed and icheck considers it to contain 0. `Bad freeblock' means that a block number outside the available space was encountered in the free list. `n dups in free' means that n blocks were found in the free list which duplicate blocks either in some file or in the earlier part of the free list. BUGS
Since icheck is inherently two-pass in nature, extraneous diagnostics may be produced if applied to active file systems. It believes even preposterous super-blocks and consequently can get core images. ICHECK(1M)