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What is the UNIX command to wait for a specified number of seconds before exit
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Write a korn shell script for renaming the filenames of the files stored in a folder to lower case.
Rohit_Ash
- May 27th, 2009
Tested script.#! /usr/bin/kshecho "start"for name in `ls -1`doecho "name $name"name1=`echo $name | tr [A-Z] [a-z]`;echo "name1 $name1"mv $name $name1;if [ -z $name ]thenexit;fidone
ENIAC
- Feb 24th, 2009
#!/bin/gawk -f## LowerFiles.gawk## Using GAWK, we can strip off the file name from the full path, # and rename it only when necessary (skip files that are already lowercase.)# U...
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Print numbers in the reverse order
Write a shell script that accept any number of arguments and print them in the reverse order
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...
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
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.
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
What are the steps for locking a file?
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.
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;
What is the method by which we find the list of users logged on a server using telnet service?
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
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);
- }
- }
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 caseGive 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
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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