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Top Forums Programming Reading a binary file in text or ASCII format Post 82730 by RishiPahuja on Tuesday 6th of September 2005 02:42:28 AM
Old 09-06-2005
MySQL

Nagendra,

There is no way to convert binary file to ascii format.These two are basic intrinsic file properties. meaning during creation itself you determine if the file has to be binary or ascii text. Binary file will be usually of some specified format say pdf/executable/word document etc. for converting to text you will have specific tools for specific formats to ascii/text etc.

But if you binary file contains some valid ASCII strings in it, say like error messages you can filter them using strings command.

Code:
strings binaryFileName

hope it helps.

rishi Smilie
 

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file(1B)					     SunOS/BSD Compatibility Package Commands						  file(1B)

NAME
file - determine the type of a file by examining its contents SYNOPSIS
/usr/ucb/file [-f ffile] [-cL] [-m mfile] filename... DESCRIPTION
file performs a series of tests on each filename in an attempt to determine what it contains. If the contents of a file appear to be ASCII text, file examines the first 512 bytes and tries to guess its language. file uses the file /etc/magic to identify files that have some sort of magic number, that is, any file containing a numeric or string con- stant that indicates its type. OPTIONS
-c Check for format errors in the magic number file. For reasons of efficiency, this validation is not normally carried out. No file type-checking is done under -c. -f ffile Get a list of filenames to identify from ffile. -L If a file is a symbolic link, test the file the link references rather than the link itself. -m mfile Use mfile as the name of an alternate magic number file. EXAMPLES
Example 1 Using file on all the files in a specific user's directory. This example illustrates the use of file on all the files in a specific user's directory: example% pwd /usr/blort/misc example% /usr/ucb/file * code: mc68020 demand paged executable code.c: c program text counts: ascii text doc: roff,nroff, or eqn input text empty.file: empty libz: archive random library memos: directory project: symboliclink to /usr/project script: executable shell script titles: ascii text s5.stuff: cpio archive example% ENVIRONMENT VARIABLES
The environment variables LC_CTYPE, LANG, and LC_default control the character classification throughout file. On entry to file, these environment variables are checked in the following order: LC_CTYPE, LANG, and LC_default. When a valid value is found, remaining environ- ment variables for character classification are ignored. For example, a new setting for LANG does not override the current valid character classification rules of LC_CTYPE. When none of the values is valid, the shell character classification defaults to the POSIX.1 "C" locale. FILES
/etc/magic ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
magic(4), attributes(5) BUGS
file often makes mistakes. In particular, it often suggests that command files are C programs. file does not recognize Pascal or LISP. SunOS 5.11 14 Sep 1992 file(1B)
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