Linux Format forums

Re: Help needed...

Bazza — Thu Jan 03, 2013 12:06 pm

Author: Bazza

Posted: Thu Jan 03, 2013 12:06 pm

Hi DM...

As your advice bears no relevance to my original post I will let you find the ROM images for Current Macbook Pro Intel 64 bit architecture...

I await your finding the binar(y)(ies) with eagerness... ;oO

Re: Help needed...

Dutch_Master — Thu Jan 03, 2013 12:11 am

Author: Dutch_Master

Posted: Thu Jan 03, 2013 12:11 am

Wot, you say you can't d/l an image from some place?

Re: Help needed...

Bazza — Wed Jan 02, 2013 10:50 pm

Author: Bazza

Posted: Wed Jan 02, 2013 10:50 pm

Hi DM...

Grabbing a partial BIOS image is dead easy but not on a Macbook Pro though... <BIG WINK>

CYA...

Re: Help needed...

Bazza — Wed Jan 02, 2013 10:40 pm

Author: Bazza

Posted: Wed Jan 02, 2013 10:40 pm

Hi nelz...

Point taken, Mr Pedantic...

> Having said that, I tried running it with sh, bash and zsh abd
> the result was always the same. I think towy is just being
> difficult

I saw his winky smiley after 'HTH' and was unsure how to take
it so maybe you are right... ;o)

CYA...

Re: Help needed...

nelz — Wed Jan 02, 2013 9:59 pm

Author: nelz

Posted: Wed Jan 02, 2013 9:59 pm

Bazza wrote:

Remember, I was using only a Macbook Pro and the default shell is BASH.

I hadn't even noticed the BASH part though, as the default shell for the many flavours of Linux I have used, IIRC, have been BASHes...

The default shell is irrelevant because you have specified /bin/sh in the shebang line. Although this is often a symlink to /bin/bash, bash behaves as a pure POSIX shell when called like this, not as bash. So your script is a shell script, not a bash script.

Having said that, I tried running it with sh, bash and zsh abd the result was always the same. I think towy is just being difficult

Re: Help needed...

Dutch_Master — Wed Jan 02, 2013 9:51 pm

Author: Dutch_Master

Posted: Wed Jan 02, 2013 9:51 pm

Executable bit (not) set? Perhaps the binary file has too much resemblance of a text file? Try grabbing a section of a BIOS image, that's machine code for sure

Re: Help needed...

Bazza — Wed Jan 02, 2013 9:39 pm

Author: Bazza

Posted: Wed Jan 02, 2013 9:39 pm

Hi nelz...

Remember, I was using only a Macbook Pro and the default shell is BASH.

I hadn't even noticed the BASH part though, as the default shell for the many flavours of Linux I have used, IIRC, have been BASHes...

If I am wrong then I stand corrected...

However, towy's setup did NOT work so my code is NOT fully portable. So it is either my code that is wrong or towy's shell/terminal is doing something wrong. Either way something is not correct and I have no idea why the DAT file is NOT being saved as a binary file but instead it is a text file...

Any ideas?

Re: Help needed...

nelz — Wed Jan 02, 2013 7:55 pm

Author: nelz

Posted: Wed Jan 02, 2013 7:55 pm

Bazza wrote:

This is a BASH script that saves and retrieves binary data.

Code:

# !/bin/sh

See! It's shell script

Bazza wrote:

Please give you Linux flavour and the Shell/Terminal you use...

It shouldn't matter which distro you use, nor which terminal, because /bin/sh calls your shell program in POSIX compliant mode. That's about as portable as it gets. You really shouldn't specify bash for a script unless you actually need bash extras, like arrays.

Re: Help needed...

Bruno — Wed Jan 02, 2013 7:48 pm

Author: Bruno

Posted: Wed Jan 02, 2013 7:48 pm

I don't know if it makes a difference, but you've put a space between the "#" and the "!" of the shebang in your script. I've not seen this done anywhere else.

Re: Help needed...

Bazza — Wed Jan 02, 2013 5:47 pm

Author: Bazza

Posted: Wed Jan 02, 2013 5:47 pm

Hi guys and gals who tried this out...

Update...

It also works on PCLinuxOS 2009 and Debian 6.0.x; neat.

Re: Help needed...

Bazza — Tue Jan 01, 2013 12:44 pm

Author: Bazza

Posted: Tue Jan 01, 2013 12:44 pm

Hi nelz and MBF...

Cool, thanks for trying...

I cannot guess why towy71's does not work. You two have cheered me up bo end...

When I am back at work I will try it out on Debian and PCLinuxOS 2009...

Again thanks mateys...

EDIT:
Wonder if a real time _text_mode_ audioscope is a possibility from say /dev/dsp in Linux mode now? ;o)

Re: Help needed...

MartyBartfast — Tue Jan 01, 2013 10:55 am

Author: MartyBartfast

Posted: Tue Jan 01, 2013 10:55 am

Fedora 17, XFCE Terminal Emulator 0.4.8

Code:

~/tmp$ bash Bin2Hex2Dec.sh

$VER: Bin2Hex2Dec.sh_Version_0.00.10_Public_Domain_B.Walker_G0LCU.

Generate and save a binary file, display a hexadecimal dump of that file,
select a single byte from this binary file, display as adecimal number in
string format then add this string number to another number...

Offset. Hexadecimal dump. ASCII dump.
00000000 00 07 0a 0d 7f 28 43 29 32 30 31 32 2c 20 42 2e |.....(C)2012, B.|
00000010 57 61 6c 6b 65 72 2c 20 47 30 4c 43 55 2e 80 ff |Walker, G0LCU...|
00000020

Now obtain the _byte_ from offset 0, the first byte, (0x00), single
byte length, already converted to a decimal string from hexadecimal...

Decimal value in string format = 0...

Now ADD a number 7 to the decoded decimal string. 0 + 7 = 7...

(Now edit the script and change the _variable_ ~subscript~ to another value.)

Re: Help needed...

nelz — Tue Jan 01, 2013 10:32 am

Author: nelz

Posted: Tue Jan 01, 2013 10:32 am

Code:

$VER: Bin2Hex2Dec.sh_Version_0.00.10_Public_Domain_B.Walker_G0LCU.

Generate and save a binary file, display a hexadecimal dump of that file,
select a single byte from this binary file, display as adecimal number in
string format then add this string number to another number...

Offset. Hexadecimal dump. ASCII dump.
00000000 00 07 0a 0d 7f 28 43 29 32 30 31 32 2c 20 42 2e |.....(C)2012, B.|
00000010 57 61 6c 6b 65 72 2c 20 47 30 4c 43 55 2e 80 ff |Walker, G0LCU..�|
00000020

Now obtain the _byte_ from offset 0, the first byte, (0x00), single
byte length, already converted to a decimal string from hexadecimal...

Decimal value in string format = 0...

Now ADD a number 7 to the decoded decimal string. 0 + 7 = 7...

(Now edit the script and change the _variable_ ~subscript~ to another value.)

I get the same output whether I run it with sh, zsh or bash.

Re: Help needed...

Bazza — Sun Dec 30, 2012 3:14 pm

Author: Bazza

Posted: Sun Dec 30, 2012 3:14 pm

Thanks towy71...

First failure... ;o(

It should look like this...

Code:

$VER: Bin2Hex2Dec.sh_Version_0.00.10_Public_Domain_B.Walker_G0LCU.

Generate and save a binary file, display a hexadecimal dump of that file,
select a single byte from this binary file, display as adecimal number in
string format then add this string number to another number...

Offset. Hexadecimal dump. ASCII dump.
00000000 00 07 0a 0d 7f 28 43 29 32 30 31 32 2c 20 42 2e |.....(C)2012, B.|
00000010 57 61 6c 6b 65 72 2c 20 47 30 4c 43 55 2e 80 ff |Walker, G0LCU...|
00000020

Now obtain the _byte_ from offset 0, the first byte, (0x00), single
byte length, already converted to a decimal string from hexadecimal...

Decimal value in string format = 0...

Now ADD a number 7 to the decoded decimal string. 0 + 7 = 7...

(Now edit the script and change the _variable_ ~subscript~ to another value.)

Barrys-MacBook-Pro:~ barrywalker$

Making something platform independent is SOOOO bloody difficult...

Re: Help needed...

towy71 — Sun Dec 30, 2012 1:57 pm

Author: towy71

Posted: Sun Dec 30, 2012 1:57 pm

xubuntu 12.10 Xfce Terminal Emulator Terminal 0.4.8

Code:

dicky@matilda:~$ sh Bin2Hex2Dec.sh

$VER: Bin2Hex2Dec.sh_Version_0.00.10_Public_Domain_B.Walker_G0LCU.

Generate and save a binary file, display a hexadecimal dump of that file,
select a single byte from this binary file, display as adecimal number in
string format then add this string number to another number...

Offset. Hexadecimal dump. ASCII dump.
00000000 5c 78 30 30 5c 78 30 37 5c 78 30 41 5c 78 30 44 |\x00\x07\x0A\x0D|
00000010 5c 78 37 46 28 43 29 32 30 31 32 2c 20 42 2e 57 |\x7F(C)2012, B.W|
00000020 61 6c 6b 65 72 2c 20 47 30 4c 43 55 2e 5c 78 38 |alker, G0LCU.\x8|
00000030 30 5c 78 46 46 |0\xFF|
00000035

Now obtain the _byte_ from offset 0, the first byte, (0x00), single
byte length, already converted to a decimal string from hexadecimal...

Decimal value in string format = 92...

Now ADD a number 7 to the decoded decimal string. 92 + 7 = 99...

(Now edit the script and change the _variable_ ~subscript~ to another value.)

dicky@matilda:~$

HTH