decompress vmlinuz

[raghulnt]

Hello Experts,
I'm trying to uncompress the vmlinuz(located at /boot) to vmlinux for oprofile. Linux 2.6.24-26.generic is the version.

The below command does not output anything:

Od-A d-t x1 vmlinuz-`uname -r` | grep '1f 8b 08 00'

can you please tell me what am I missing?

Please help.

Thanks

[Zugzwang]

Perhaps you could explain what "Od-A d-t x1" is supposed to mean?

[Bachstelze]

Using my psychic powers I guess it means 'od -t x1'.

[gmargo]

What is the significance of '1f 8b 08 00'?

The reason you don't see it is because od(1) prints lines 16 bytes at a time by default. Your particular pattern happens to be split over two lines.



$ od -t x1 vmlinuz-2.6.24-26-generic | grep "1f 8b 08 00"
(returns nothing)

$ od --width=32 -t x1 vmlinuz-2.6.24-26-generic | grep "1f 8b 08 00"
0026200 f0 ff 8d 83 f0 14 1d 00 ff e0 54 14 1d 00 1f 8b 08 00 81 62 15 4b 02 03 ec 3a 6d 74 54 45 96 d5