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Operating Systems HP-UX Replacing Hex Characters In A File Using awk? Post 302899283 by AndyBSG on Monday 28th of April 2014 10:27:50 AM
Old 04-28-2014
Question Replacing Hex Characters In A File Using awk?

Hi guys,

First off, i'm a complete noob to UNIX and LINUX so apologies if I don't understand the basics!

I have a file which contains a hex value of '0D' at the end of each line when I look at it in a hex viewer.

I need to change it so it contains a hex value of '0D0A0A'

I thought the easiest way would be using awk so I tried this

Code:
awk '{sub("\x0D","\x0D\x0A\x0A")}' filename

It doesn't give me an error but neither does it seem to work. Can anyone tell me what i'm doing wrong?

Thanks for any advice!

Last edited by AndyBSG; 04-28-2014 at 11:46 AM..
 

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RAX2(1) 						    BSD General Commands Manual 						   RAX2(1)

NAME
rax2 -- radare base converter SYNOPSIS
rax2 [-ebsSvxkh] [[value] ...] DESCRIPTION
This command is part of the radare project. This command allows you to convert values between positive and negative integer, float octal, binary and hexadecimal values. OPTIONS
-e Swap endian. -b Convert from binary string to caracter (rax2 -b 01000101) -s Convert from hex string to caracter (rax2 -s 43 4a 50) -S Convert from hex string to caracter (rax2 -S C J P) -v Show program version -x Convert a string into a hash -k Keep de same base as the input data -h Show usage help message USAGE
Available variable types are: int -> hex rax2 10 hex -> int rax2 0xa -int -> hex rax2 -77 -hex -> int rax2 0xffffffb3 int -> bin rax2 b30 bin -> int rax2 1010d float -> hex rax2 3.33f hex -> float rax2 Fx40551ed8 oct -> hex rax2 35o hex -> oct rax2 Ox12 (O is a letter) bin -> hex rax2 1100011b hex -> bin rax2 Bx63 With no arguments, rax2 reads values from stdin. You can pass one or more values as arguments. $ rax2 33 0x41 0101b 0x21 65 0x5 You can do 'unpack' hexpair encoded strings easily. $ rax2 -s 41 42 43 ABC And it supports some math operations. $ rax2 0x5*101b+5 30 It is very useful tool for scripting, so you can read floating point values, or get the integer offset of a jump or a stack delta when ana- lyzing programs. SEE ALSO
radare2(1), rahash2(1), rafind2(1), rabin2(1), ranal2(1), radiff2(1), ragg2(1), rarun2(1), rasm2(1), AUTHORS
pancake <pancake@nopcode.org>, nibble <nibble@develsec.org> BSD
Mar 12, 2010 BSD
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