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First 15 minutes on F15!!!

Posted 08-31-2011 at 07:12 AM by hi2arun

Well.. I wanted to share my feel when I went live on F15. yeah!

Here goes how I was literally lovelocked with Gnome 3.0 and F15 on the day I installed it.

Phenomenal GUI. Am pretty sure M$ will leech its glossy touch. F15 with G3.0 is gonna lure lotta gui-freaks to Linux.

Though the GUI looked so gr8 with oh-is-this-really-linux kinda transitions, I felt a lil hard to figure out how to configure static IP for my WiFi adapter. Well. Perhaps FC15/G3 could...

hi2arun

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Comment a block in shell

Posted 08-31-2011 at 12:22 AM by hi2arun

Tags bash, script

We all know, to comment out a line in shell script, '#' token is inserted in the line that needs to be made dead.
Eg:

Code:

# This is a dead line
echo "This line is live"

However, '#' token can be pesky if a block of lines need to be commented out.
Say, to comment out the following block using '#'

Code:

# comment starts here
# All these lines
# are blocked
# using '#' token
# ...
# ...
# ...

...

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Mapping address to line - Linux

Posted 08-31-2011 at 12:20 AM by hi2arun

Tags debug, kernel, panic

Well.. when you write your own kernel module, in the devel stage, chances for bringin down the kernel (panic.. ah sick) are huge.
Oops (pet name for kernel panic) mostly spits lots of martian traces that include stack addresses, registers and its value, EIP, etc.

To know the culprit line that caused panic, decode the address to line as follows:
EIP wud luk like...

Code:

EIP: [] ip_check+0x45a/0x21a [ip_tables] SS:ESP 0049:c098281a

Look at the selection...

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How to see what is in an RPM without installing it?

Posted 08-31-2011 at 12:18 AM by hi2arun

Tags rpm, rpm commands

Datz simple!
1. Create a temp directory

Code:

# mkdir x

2. Change directory

Code:

# cd x

3. Now extract the RPM

Code:

# rpm2cpio /path/of/ur/RPM/file.rpm | cpio -dmi

There u go! Now you have ur RPM xtractd in directory 'x'

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