How to repair a sparsebundle image

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In this tutorial I will show you how to repair a sparsebundle image. It's not difficult but it can take some time, depending of the size of your image.
Also, please do note that some images are so damaged that they cannot be repaired so do not throw stones at me if you cannot fix yours.

OS X Misc Stuff

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How to start finder from command line:

Open up Terminal and run the command below (dot means current directory).
user@osx$ open .

How to restart the graphical interface of OS X:

user@osx$ sudo killall -HUP WindowServer

How to retrieve CPU information via command line in OS X:

sysctl -n machdep.cpu.brand_string
system_profiler | grep Processor

How to assign disks to AIX partition via VIO

Submitted by root on

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What I am showing you below is not hard at all but it needs extra attention and the steps must be followed accordingly.

First of all you must have the information regarding the assigned LUNS, either created by you or by the storage admin.
Once you have them, open 3 sessions: one to each VIO and another to the target partition. They will be referred below as gzv1, gzv2 and gzaix.

Scan for new devices on first VIO:

gzv1# cfgmgr

Executing commands remotely on multiple systems via SSH

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Let's assume you have your systems farm. From one of them you are able to connect to all others with ssh keys already configured.
Now, you create a list with all these systems in it. If you want to temporary skip one system, just put # in front of it, like in our example (server2 disabled).
The ssh options are there to assure you that even if you have ssh configuration problems or one server is down, you won't get stuck on that and everything will go smooth to the end.

Strings or File Manipulation

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How to replace tab with newline:

gz@linux:~$ cat list
str1    str2    str3    str4    str5    str6    str7    str8
gz@linux:~$ cat list | tr '\t' '\n' >list2
gz@linux:~$ cat list2
str1
str2
str3
str4
str5
str6
str7
str8

How to get different parts of a string, for example with path and file name:

gz:tips# foo=/tmp/dir/filename.tar.gz
gz:tips# echo ${foo%/*}
/tmp/dir
gz:tips# echo ${foo##*/}
filename.tar.gz
gz:tips# echo ${foo%%.*}
/tmp/dir/filename
gz:tips# echo ${foo%.tar.gz}

AIX World

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This corner is for AIX related docs.
You can find here tutorials, commands and other useful information.

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