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Top Forums Shell Programming and Scripting Files appear to have no content Post 302452642 by jvorwald on Sunday 12th of September 2010 08:27:07 AM
Old 09-12-2010
Files appear to have no content

I have about 11000 files on a hard disk that were generated by copying a directory structure from a dvd. The files are supposed to contain ascii data.

I am unable to read or inspect the contents of several of the files, I receive the error no such file or directory.

I am using cygwin on windows, and JAVA code to read/process the files. I have tried to open the files with textpad binary, but get the message that the file does not exist, after I selected the file from a file open dialog.

The first file that I looked at, fr005.1M was fine.
The rest of the files that I looked at, starting with fr005.1T, do not appear to have any content, but show up with a file size.

Any suggestions on how to determine why there is a file size but no apparent content? Is it possible to extract the ascii data?

Additional information:
Here are some cygwin command outputs to show the situation

Listing of files
Code:
$ ls -l fr005.*
-rwxrwxrwx 1 ???????? ????????  30331 2009-12-23 09:38 fr005.1M
-rwxrwxrwx 1 ???????? ????????  21197 2009-12-23 09:38 fr005.1T
-rwxrwxrwx 1 ???????? ???????? 325696 2009-12-23 09:38 fr005.1X
-rwxrwxrwx 1 ???????? ????????   1574 2009-12-23 09:38 fr005.4
-rwxrwxrwx 1 ???????? ????????  19387 2009-12-23 09:38 fr005.4M
-rwxrwxrwx 1 ???????? ????????  48368 2009-12-23 09:38 fr005.5M

file fr005.1M has content as seen from the more command
Code:
$ more fr005.1M
A/C 614 Flight  Run 5 "AMBIENT" MNVRCODE:   -1.000 REGIME: -1 TRANS: 0 RDF: RDF
File 2 of 6
etc

file fr005.1T doesn't return anything with command more
Code:
$ more fr005.1T
(No output)

hexdump (and other binary editors) are unable to find the other files
Code:
$ hexdump fr005.1T
hexdump: fr005.1T: No such file or directory

$ hexdump fr005.4
hexdump: fr005.4: No such file or directory

$ hexdump fr005.1X
hexdump: fr005.1X: No such file or directory

$ hexdump fr005.4M
hexdump: fr005.4M: No such file or directory

$ hexdump fr005.5M
hexdump: fr005.5M: No such file or directory


Last edited by pludi; 09-12-2010 at 09:35 AM..
 

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MKDIR(1)						    BSD General Commands Manual 						  MKDIR(1)

NAME
mkdir -- make directories SYNOPSIS
mkdir [-pv] [-m mode] directory_name ... DESCRIPTION
The mkdir utility creates the directories named as operands, in the order specified, using mode rwxrwxrwx (0777) as modified by the current umask(2). The options are as follows: -m mode Set the file permission bits of the final created directory to the specified mode. The mode argument can be in any of the formats specified to the chmod(1) command. If a symbolic mode is specified, the operation characters ``+'' and ``-'' are interpreted rela- tive to an initial mode of ``a=rwx''. -p Create intermediate directories as required. If this option is not specified, the full path prefix of each operand must already exist. On the other hand, with this option specified, no error will be reported if a directory given as an operand already exists. Intermediate directories are created with permission bits of rwxrwxrwx (0777) as modified by the current umask, plus write and search permission for the owner. -v Be verbose when creating directories, listing them as they are created. The user must have write permission in the parent directory. DIAGNOSTICS
The mkdir utility exits 0 on success, and >0 if an error occurs. SEE ALSO
rmdir(1) COMPATIBILITY
The -v option is non-standard and its use in scripts is not recommended. STANDARDS
The mkdir utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible. HISTORY
A mkdir command appeared in Version 1 AT&T UNIX. BSD
January 25, 1994 BSD
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