Chmod Command in Linux
chmod is used to change the permissions of files or directories. Let's say you are the owner of a file named myfile, and you want to...
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Shell Scripting to check file exist and whether file is writable or not
Write a shell script to check to see if the file "/etc/shadow" exists. If it does exist, display "Shadow passwords are enabl...
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What goes into the body of a good bug report?
A good bug report contains a descriptive summary of the bug, the steps to reproduce the bug, the expected behavior of the bug, and the actu...
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What is difference between Priority and Severity?
Priority refers to how important a bug is to be fixed, and severity refers to how detrimental or damaging the bug is to the system or user ...
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Shell Scripts to print the files present in one directory but not present in other directory
# cmp_dir - program to compare two directories and print the files # which are present in first directory but not in second directory # ...
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Scripts to check,String checks operator and techniques
#String checks operator and techniques str1="ishant" str2="gaurav" str3="" # to check if two string are equal...
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Scripts to find one file and append data to it
#This scripts find one file in current directory and append data to it if [ -f $1 ] then if [ -w $1 ] # -w option is used to write...
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Script to find if file exist, then change its name
#This scripts find one file in current directory and changes its name if [ -f $1 ] then mv $1 $2 echo "File name has been changed,Let...
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Reverse a String in Java using Recursion
public class ReverseOfString { public static void main(String args[]) { String str = ...
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What is the difference between List and Set?
What is the difference between List and Set? List can contain duplicate elements whereas Set does not allow duplicate elements. List ma...
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Custom object as key in Collection
What do you need to do to use a custom object as key in Collection classes like Map or Set? Answer : If you are using any custom object ...
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ArrayList Vs Vector
ArrayList and Vector both implements List interface and maintains insertion order. 1) ArrayList is not synchronized whereas Vector is...
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Iterator Vs Enumeration VS ListIterator in Java Collection
Iterator , Enumeration and ListIterator are interface which are used to iterate over the collections in Java. Iterator provide iterato...
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SQL Interview Question Set 2
Write a SQL query to print the Name of the managers with id who are having more than 3 employee under him. employees(EMPLOYEE_ID,FIRST_N...
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Script to print the last modification time of file if exists
Write a script that accepts a file name as arguments and display the last modification time if the file exists and a suitable message if it...
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"grep" command interview Questions
We have three files in our current directory as below : Newfile.txt This is ishant gaurav I love to play cricket I am bit confused no...
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