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How to edit a pcl (binary) file ?

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Top Forums UNIX for Beginners Questions & Answers How to edit a pcl (binary) file ?
# 8  
Old 10-26-2016
Yes, the files look unchanged from a binary point of view, same size. Also printout is OK, just the wanted changes, everything else is unchanged.
And yes, the line lenght of my file is huge. awk just goes beserk.


The challenge now is to find&edit a string with both escape char and ascii, i.e.
Code:
FIND:
*p1088Y[Esc]*c100g2P

REPLACE with:
*p4088Y[Esc]*c200g2P

where [Esc] is the hex 1B

Thanks.
Last edited by emare; 10-26-2016 at 12:59 PM..
This User Gave Thanks to emare For This Post:
Corona688
# 9  
Old 10-26-2016
This seems to work:

Code:
$ printf "*p1088Y\x1b*c100g2P" | perl -p -e 's/[*]p1088Y\x1b[*]c100g2P/*p4088Y\x1b*c200g2P/g;' | hexdump -C

00000000  2a 70 34 30 38 38 59 1b  2a 63 32 30 30 67 32 50  |*p4088Y.*c200g2P|
00000010

$

The [*] is to make Perl use asterisk as a literal character instead of a wildcard modifier. The second half of the expression is just taken literally anyway.
This User Gave Thanks to Corona688 For This Post:
emare
# 10  
Old 10-26-2016
Thanks Corona688!
Tomorrow I will check!
# 11  
Old 10-31-2016
Quote:
Originally Posted by Corona688
Perl is specifically designed to be binary-safe and have unlimited line lengths, is the thing.
Just like the GNU sed, doesn't it ?
# 12  
Old 10-31-2016
Hi.

If the perl solution from Corona688 works, then use it.

Otherwise here are some alternatives, but unknown if they exist in AIX:
Code:
bbe - sed-like editor for binary files
beav - binary editor and viewer
bless - A full featured hexadecimal editor
bvi - binary file editor

dhex - ncurses based hex editor with diff mode
hexer - interactive binary editor with a Vi-like interface
jeex - visual editor to view and edit files in hexadecimal
le - Text editor with block and binary operations

lfhex - large file hex editor
ncurses-hexedit - Edit files/disks in hex, ASCII and EBCDIC
okteta - hexadecimal editor for binary files
radare2 - free and advanced command line hexadecimal editor

shed - A simple hex editor with a pico-style interface
tweak - Efficient text-mode hex editor

Best wishes ... cheers, drl
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