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What is a zombie?
thanigaivelb
- Mar 6th, 2009
A zombie process is a process that completed execution but still in process table. When a process ends, all of the memory and resources associated with it are deallocated so they can be used by other ...
sanjay
- May 25th, 2007
A zombie is a process whose parent has exited but the child has not.
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How do you debug a core dump?
peter
- Jan 14th, 2006
> gdb a.out ? core core? backtrace
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Find inode Number
Create a program to find out the inode number of any desired file
shailesh chanderiya
- Jul 20th, 2016
Ls -lrti filename |awk { print $1}
Akshayenehra
- Sep 20th, 2009
Read fname #file name to be searched.p=`pwd`cd /l=`find -name $fname`l=`echo $l | ls -i`set $lecho "inode is $1"cd $p
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Find Smallest of 3 Numbers
Write a shell script to find the smallest of three numbers that are read from the keyboard.
Gaurav.khurana
- Apr 19th, 2015
#@goskn You have given for the biggest number :) .. # here is the code for the lowest number first=90; second=3; third=45; echo " $first $second $third "; if [ $first -gt $second ] then echo "...
goksn
- Sep 7th, 2009
echo first_numread first_numecho second_numread second_numecho third_numread third_numif (first_num>second_num) then if (first_num>third_num) then echo $first_num is the biggest e...
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Give examples of how memory leaks can occur with c programs?
Answer posted by sonal on 2005-06-08 08:15:23: a memory leak occurs when mem is allocated but never freed . leakes can b caused by using malloc() without using any free(). but leaks can also be caused if a pointer to dynamically allocated memory is delleted overwritten , it can be caused when allocated mem is overwritten accidentally
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How would you remove a semaphore / shared memory whose owner processes have died?
raj
- May 17th, 2007
shared memory can be cleaned byshmcleanipcrm after finding the ids using ipcs...
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What is the use of sleep() function?
avinaspandey
- Jun 3rd, 2010
Sleep function can be used in the below scenario:1) Suppose you want to write the unix shell script which will keep on checking the arrival of a file in a particular directory in specified time, say e...
avinaspandey
- Jun 3rd, 2010
The sleep() function will cause the calling thread to be suspended from execution until either the number of real-time seconds specified by the argument seconds has elapsed or a signal is delivered to...
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What is inter-process communication facility?
Duc
- Oct 4th, 2011
Gopi mentioned the Unix socket, not TCP/IP or any kind of networking socket
jsr.anur
- Dec 6th, 2008
Sockets won't come in Inter Process Communication.Inter Process communication means communication between the processes with in the same system.Sockets can communicate with the external systems
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What are the benefits of creating links to a file?
abdas
- Aug 1st, 2011
To make the file more secure, if the original file get deleted accidently, then the link will be available there.
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What is the command to find all of the files which have been accessed within the last one month?
sham2sushil
- May 2nd, 2010
find / -atime -30 -print 2>/dev/null2>/dev/null will discard all the error message. So it will list only the files
suresh
- Aug 9th, 2007
find / -atime -30
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What are the steps for locking a file?
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Explain the unix file system?
mkannanmca86
- May 6th, 2008
A file system is a collection on BOOT BLOCK, SUPER BLOCK, I-LIST and DIRECTORY AND DATA BLOCK. Every directory have a pointer to a i-node(Information node) number and the directory name. Every i-...
Chandan Kumar
- Aug 26th, 2007
There are three file system in UNIX as below:-1. Ordinary File System: contains only data2. Directory File System: contains other files and directories?3. Device File System: represents all hardware devices.
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How to read and write of a open file?
sarikamagdum
- Nov 12th, 2009
Read from file:cat file_nameOr on terminal pagewise read as :more file_name.Write to file :echo "`cmd`" > file_name.Where cmd= any executable UNIX command. &n...
harish
- Dec 4th, 2006
We can use the read and write system call for thatread(fd,buff,BUF_SIZE);write(fd,buff,strlen(buff));assuming buff is a char string;
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What is the method by which we find the list of users logged on a server using telnet service?
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Why do we need a dynamic library for? How is it different from a static library
sk_seeker
- Dec 29th, 2007
My previous post just died on me. So, let me repeat what I wrote before. If both reach the thread, my apologies.Linker: What does it do??-------------------------The job of the linker is to combine on...
vthegde
- Dec 15th, 2007
I think the other advantage is, multiple processes can share the same image of the library. this would reduce the foorprint and memory requirements of the process during execution
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How to write program to print descending order
Bhushan Pote
- Apr 6th, 2015
Code- #include <stdio.h>
- "Enter a number:");
- scanf("%d""The first %d odd numbers are:-""
- %d",i);
- }
- }
Bhushan
- Apr 6th, 2015
Code- #include
- "Enter a number:");
- scanf("%d""The first %d odd numbers are:-
- ""%d"j);
- }
- }
Code- #include
- "Enter a number:");
- scanf("%d""The first %d odd numbers are:-
- ""%d"i);
- }
- }
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Identify the Mistake
What is wrong with the code
a=0 b=0 IF [$a -eq $b] then echo a is equal to b else echo " a is not equal to b" fi
a) Variables should be assigned on individual rows not next next
b) in if statement there should be space after "[" and before "]"
c) first echo statement should be enclosed within ""
d) IF and FI should be in lower case
Unix Programming Interview Questions
Ans