UNIX basic question 1

[52xmax]

Just want to know,

1, What is interprocess communication, how it will work?

2. How do I take super block backup?

Thanks in advance.

 

[tuka]

Go to SunSolve (

http://www.sun.com)

There are Infodocs available for IPCs'

Some ID# are:
infodoc ID: 13421 Shared memory commands explained
6328 All about Shared memory paramters in 2.X
2270 Understanding semaphores, seminfo,
seminfo_semaphore info
13523 Semaphores Explained
SRDB ID: 12075 How to confgiure the IPC semaphores and
shared memory

SRDB ID: 5288 How to determine the IPC semaphore
paramter values


SUPERBLOCKS backups

When the filesystem is created (newfs command) there are alternate superblocks created. If fsck find a superblock is bad you can use an alternate superblock and this will correct the problem. Do a man on fsck. Here is a command example to see the superblocks created on a filesystem.

newfs -N /dev/rdsk/c1t0d0s0 (will list all superblocks)

Infodoc ID: 2273 Kernel tuning parameters for messages
ques

Infocod ID: 7241 Determine the message queue parameters

 

[amarsafy]

what is the best configuration for solaris kernel parameters

 

[bfitzmai]

Block 32 is always the first alternate superblock.