mkannanmca86

 Profile Answers by mkannanmca86 Questions by 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.

Answer Question  Select Best Answer

== Users and permissions practicum == * Rig it so everything in the folder gets deleted tonight at 10pm. Every night at 10pm.== Local security == * How do you feel about `sudo`? * What's the difference between `telnet` and `ssh`? What's a good use for each? * How do you ensure your users have hard-to-guess passwords?== Filesystem == * What is the difference between a symbolic and hard link? When...

thanigaivelb

 Profile Answers by thanigaivelb Questions by 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.

Answer Question  Select Best Answer

Rohit_Ash

 Profile Answers by Rohit_Ash Questions by Rohit_Ash

• May 27th, 2009

This is easiest way:sleep seconds

UncaAlby

 Profile Answers by UncaAlby Questions by UncaAlby

• Nov 7th, 2008

sleep specified number of secondsexit

Answer Question  Select Best Answer

Rohit_Ash

 Profile Answers by Rohit_Ash Questions by 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

 Profile Answers by ENIAC Questions by 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...

Answer Question  Select Best Answer

Rohit_Ash

 Profile Answers by Rohit_Ash Questions by Rohit_Ash

• May 27th, 2009

We can use chmod *** dir_nameWhere *** are permissions.

shobhitcs

 Profile Answers by shobhitcs Questions by shobhitcs

• Jan 17th, 2008

How can we add stick bits in unix file system suppose a file name with abc....how will u add any sticky bit in that because control is not working in this case .....

Answer Question  Select Best Answer

sarikamagdum

 Profile Answers by sarikamagdum Questions by 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;

Answer Question  Select Best Answer

sham2sushil

 Profile Answers by sham2sushil Questions by 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

Answer Question  Select Best Answer

Write a pipeline of commands, which display on the monitor as well as save the information about the number of users using the system at present on a file called usere.ux

sham2sushil

 Profile Answers by sham2sushil Questions by sham2sushil

• May 2nd, 2010

Use the tee command.who | tee  -a usere.uxtee -a : display the o/p on monitor and save (append) in the file also.--Shambhu

Answer Question  Select Best Answer

avinaspandey

 Profile Answers by avinaspandey Questions by 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

 Profile Answers by avinaspandey Questions by 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...

Answer Question  Select Best Answer

Write a shell script that reports the logging in of a specified user within one minute after he/she logs in. The script automatically terminates if the specified user does not login during a specified period of time.

Jyoti Ranjan

 Profile Answers by Jyoti Ranjan Questions by Jyoti Ranjan

• Aug 4th, 2010

at command to execute the script at a specified timeDuration is assumesd as 150 minutesat -k -f log_chck -t 1008041555.00Contents of log_chck script #!/bin/ksh # Check if the user is logged ...

Answer Question  Select Best Answer

Kirthika J

• Jul 15th, 2011

Named pipe is FIFO.FIFO pipe create syntax is mknod() or mkfifo().Main thing in pipe,we cannot see the created pipe any where in the system.Named pipe is a file persistent.

Masthan

• Jun 9th, 2007

Named pipe is nothing but FIFO

Answer Question  Select Best Answer

abdas

 Profile Answers by abdas Questions by abdas

• Aug 1st, 2011

To make the file more secure, if the original file get deleted accidently, then the link will be available there.

silambarasan_m

 Profile Answers by silambarasan_m Questions by silambarasan_m

• Nov 28th, 2007

IPC also

Answer Question  Select Best Answer

Duc

• Oct 4th, 2011

Gopi mentioned the Unix socket, not TCP/IP or any kind of networking socket

jsr.anur

 Profile Answers by jsr.anur Questions by 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

Answer Question  Select Best Answer

ptmich

 Profile Answers by ptmich Questions by ptmich

• May 25th, 2012

Who | grep -c telnet | awk {print($1)}

nareshbhatm

 Profile Answers by nareshbhatm Questions by nareshbhatm

• Jan 6th, 2008

You can also use "finger"

Answer Question  Select Best Answer

Create a 5 child process from a common parent and launch different applications from the children processes....

Write a shell script that accept any number of arguments and print them in the reverse order

PREM

• Jun 16th, 2014

PRINT A NUMBER IN REVERSE

Code
       $echo "12345678" | rev

Sonali Sehgal

• Jan 15th, 2013

In PERL, we can reverse the string as follows:-

Code
$x="12345678"

Answer Question  Select Best Answer

Bhushan Pote

 Profile Answers by Bhushan Pote Questions by 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);
}
}

Answer Question  Select Best Answer

• Apr 19th, 2015

Its like a manual which informs how to use various commands available in *nix systems.
Extra information

You can create a man command for your own scripts also. It requires a particular format for inside the file. It needs to be placed in particular directory to be readable by man command

Sonali Sehgal

• Jan 15th, 2013

man is also a UNIX command like ls or cat.I am also updating the UNIX a few examples for the man command. The POSIX specification requires man to support only one option (-k) and most of the UNIX syst...

Answer Question  Select Best Answer

Write a shell script to find the smallest of three numbers that are read from the keyboard.

Gaurav.khurana

 Profile Answers by Gaurav.khurana Questions by 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

 Profile Answers by goksn Questions by 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...

Answer Question  Select Best Answer