penchal

• Apr 18th, 2007

When we run a script, it will be executed in a child shell. Changes in the child shell will not be reflected in the parent shell.For reflecting those changes, we use dot(.) command.For Example ..In a ...

vtian

• Apr 18th, 2007

./myExeSh run the script in another shell.. /myExeSh executing in  the current shell. All variable in the shell script will leave in the current shell after execution finished../myExeSh = sh myEx...

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siva2sk

 Profile Answers by siva2sk Questions by siva2sk

• Feb 24th, 2007

oh, i forgot to answer the part about function./system. calls- function call is generally within the same protection space (ie. user mode to user mode or kernel mode to kernel mode).- system call is w...

siva2sk

 Profile Answers by siva2sk Questions by siva2sk

• Feb 24th, 2007

you should refer to a man page. both create a child process.fork - parent and child are in 'running' status. they share all page tables until one of them does a write, then on-demand paging wi...

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raj

• May 17th, 2007

Deadlock:Two processes are said to be in deadlock situation if process A holding onto resources required for process B and where as B holding onto the resources required for process A.Starvation:This ...

peter

• Jan 14th, 2006

A { wait_for(lock_1) {  do something that takes time  wait_for(lock_2) {   do something  } }}B { wait_for(lock_2) {  do somet...

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lovely sethi

• Aug 25th, 2007

It is a process by which?user work will proceed at the proper time, whether user is there or not.

suhasiniballa

• Nov 18th, 2005

Scheduling

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Pruthvi

• Jul 12th, 2007

Hi Yes, What you said is some what correct. But it does?not fill what it supposed to. I mean operating system security is the preventic usage of hardware and software of system from viruses and invalid users.

safar

• May 13th, 2007

Operating system security means in simple to secure your data from external attack, either from intruder or any damage.RegardsSafar

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sumit01_77

 Profile Answers by sumit01_77 Questions by sumit01_77

• Jan 25th, 2006

In simple terms a Semaphore is a unit or resource which is used for synchrosation between two processes , it is kind of flag (in abstract terms) which every process will check before processing ahead to avoid the deadlock situationAshish

praveenlaxmipalem

 Profile Answers by praveenlaxmipalem Questions by praveenlaxmipalem

• Nov 25th, 2005

A semaphore is a type of Interprocess communication resource used for synchronization and mutual exclusion between any two asynchronous processes.

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chandu

• Jan 27th, 2006

The process of packing one or more items of data into a message buffer, prior to transmitting that message buffer over a communication channel. The packing process not only collects together values wh...

shan

• Dec 7th, 2005

In a distributed environment, client sends its request as a bundle. its like adding header to the data. This process of bundling data is called marshelling.

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dave

• Feb 11th, 2007

The root user would be allowed to ftp to the server. The /etc/ftpd/ftpusers file lists users that are disallowed from using ftp.

Nagajothi

• Feb 6th, 2007

The 'root' cannot access the remote system using FTP connection.

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zing

• Oct 10th, 2007

To ad to that ....UNIX is also used by about 30% of the population using computers.  Remember not everyone likes windows or microsoft.expand your scope as you will cover the majority

Nainesh

• Jul 21st, 2007

Unix is a barebon O.S. which can be used for software testing process because its kernel is most powerfull and secure!

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katz04

 Profile Answers by katz04 Questions by katz04

• May 18th, 2008

The Linux OS is not virus free. It is as susceptible to viruses as other operating systems. While the relative numbers of Linux viruses is small, the number of viruses written for Linux is growing as Linux comes into widespread use.

Chulbuli

 Profile Answers by Chulbuli Questions by Chulbuli

• Dec 21st, 2007

In Linus, the kernal is protected by the core and the application programes. Eve if there is any virus coming in linux has built in antivirus  application which which detect the virus and  protect the system from it.

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akki1af1

 Profile Answers by akki1af1 Questions by akki1af1

• May 21st, 2009

Every process has a private u area, yet the kernel acesses it as if there were only one u area in the system, that of the running process. The kernel changes its virtual address translation map accord...

gthosani1

 Profile Answers by gthosani1 Questions by gthosani1

• Dec 19th, 2007

The u area. In addition to the text, data, and stack segment, the OS also maintains for each process a region called the u area (User Area). The u area contains information specific to the process (e...

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How can I save a path to my favorites in command prompt to recall it later?

vishpri

 Profile Answers by vishpri Questions by vishpri

• Mar 9th, 2008

we have an additional command in AIX to obtaine previously used path or command at the command line without assigning that path to a variablerun set -o vi  command at command prompt.this wil...

Susil Kumar

 Profile Answers by Susil Kumar Questions by Susil Kumar

• Jan 4th, 2008

Assign the path to a variable except the environment variables. The variable will hold the value throughout the session. The scope is only to the shell it has been assigned at.Steps:   ...

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Lsos

cmanne

 Profile Answers by cmanne Questions by cmanne

• Sep 2nd, 2009

Lsof : lists information about files opened by processes

borngold

 Profile Answers by borngold Questions by borngold

• Feb 29th, 2008

lsof   - List open files on the system. Normally, it only lists files you (or processes you own) have open; if run as root, it lists all open files.

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How to set kernel parameters in Red Hat Linux, AIX, & Solaris.

cmanne

 Profile Answers by cmanne Questions by cmanne

• Sep 2nd, 2009

There are two methods to configure the Kernel parameters in RHEL1. by using the command "sysctl -w <parameter_name>= <value> The above command will change the kernel parameters on the f...

Manimartyr

 Profile Answers by Manimartyr Questions by Manimartyr

• May 1st, 2008

Kernel parameters can be set using sysctl utility.. or try using /etc/sysctl.conf

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richa.saxena83

 Profile Answers by richa.saxena83 Questions by richa.saxena83

• Jul 28th, 2009

HPUX:# vgdisplay If the VG is ACTIVE, you will get the output else an error message "vg not active".-RK

raisahmad

 Profile Answers by raisahmad Questions by raisahmad

• May 13th, 2008

#lsvg -o (AIX)

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What is the use of "source" command apart from running the script in current shell?

munjalpankaj

 Profile Answers by munjalpankaj Questions by munjalpankaj

• Jan 5th, 2010

This command takes the concept of specified file and passes it to the interpreter as text script. The return value of this would be the last command executed in the script.

mani_develop

 Profile Answers by mani_develop Questions by mani_develop

• Oct 1st, 2009

The soure command is used for two ways.     1. If you want run the more than one command at the time. then you should write the commands in one file. which is run by source command...

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What is the meaning of open source? How it is associated with the meaning of heavily documented?

siddharthb

 Profile Answers by siddharthb Questions by siddharthb

• Apr 29th, 2009

Yes and Open Source Software refers to provision of source code for customization as per your need, for which good documentation is essential.Also Detailed documentation about licencing type is expected to be included.eg, GPLv2, GPLv3, Apache common Licence etc ...

mahendraselvi

 Profile Answers by mahendraselvi Questions by mahendraselvi

• Jan 23rd, 2009

Computer software for which the source code is freely available .You can customize as per you needs.

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What is the number of the masked code ee@?

Sthitaprajna kar

• Mar 20th, 2017

022 is the masked code.

Sandhya.Kishan

 Profile Answers by Sandhya.Kishan Questions by Sandhya.Kishan

• Jun 15th, 2012

022 is the number of the masked code ee@

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Explain any precautions needs to be take before you do soft mount

kabilan

• Mar 21st, 2014

An NFS file system that is mounted with the soft option returns an error if the server does not respond. The hard option causes the mount to continue to retry until the server responds. The default is hard

if you want to do soft mount try this cmd ln -s

Arjun

• Feb 13th, 2013

Ln -s

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There are four possible results from this call:‘kill()’ returns 0. This implies that a process exists with the given PID, and the system would allow you to send signals to it. It is system-dependent whether the process could be a zombie.‘kill()’ returns -1, ‘errno == ESRCH’ either no process exists with the given PID, or security  enhancements are causing the system to deny its existence. (On     some...

csbhaskar

 Profile Answers by csbhaskar Questions by csbhaskar

• Mar 4th, 2011

As we all know kill command sends a signal to the kernel. This signals are of 64 types. To list all these signals you can use kill -l. Signal no 1 -31 can be invoked by user, whereas, signal no 34-64 ...

satyam.kumar2008

 Profile Answers by satyam.kumar2008 Questions by satyam.kumar2008

• Aug 9th, 2008

Kill is one of the command in UNIX/LINux which allow user to kill/terminate one process ID or multiple processes IDs.Syntax:$kill -[options] PID$kill -9 754425The kill command send the specified signal to the specified process or process group

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