Unix Shell Scripting Interview Questions
1.) In shell scripting How to indentify that the previous command was run successfully?
2.) How will you write a shell script to connect to SQL database?
3.) What does UID and GID signify?
4.) What are the different security mechanisms available in UNIX?
5.) What are the different types of shells available in UNIX?
6.) how many users have logged in and logged out in last five or 10 minutes
7.) How do you search the string for vowel's occurrence and number of occurrences of each vowel
8.) What is make used for? How is it different from a shell script?
9.) How to compare floating point number in shell scripting ?
10.) How to delete a word from a file using shell scripting???
11.) How to extract the second row of a text-file?
12.) How to compare two floating point numbers ?
13.) How to compress files by using shell scripting
14.) What are the steps to take files from unix server to windows?
15.) How to find see the file which is created today,s date with time after 10 a.m to 5 p.m?
16.) What is the basic difference u find between a shell script and perl.I mean the advantages of one over
17.) What is use of "cut" command ?Give some examples. Can we use "awk" or "sed"
18.) How Connect to a Database in Shell Programming?Please tell me Step by Step?
19.) What is this line in the shell script do #!/bin/ksh?
20.) Write a shell script to identify the given string is palindrome or not?
21.) What is the difference between writing code in shell and editor?
22.) What is INODE?
23.) What is the difference between a 'thread' and a 'process'?
24.) What does $# stand for?
25.) What is $*?
26.) If you have a string "one two three", Which shell command would you use to extract the strings?
27.) What is the difference between a shell variable that is exported and the one that is not exported?
28.) How will you list only the empty lines in a file (using grep)?
29.) How do you schedule a command to run at 4:00 every morning?
30.) How do u open a read only file in Unix?
31.) What are the different kinds of loops available in shell script?
Showing posts with label shell scripting interview questions. Show all posts
Showing posts with label shell scripting interview questions. Show all posts
Shell Script Interview Questions
Shell Script Interview Questions
Question: How do you find out what’s your shell? - echo $SHELL
Question: What’s the command to find out today’s date? - date
Question: What’s the command to find out users on the system? - who
Question: How do you find out the current directory you’re in? - pwd
Question: How do you remove a file? - rm
Question: How do you remove a - rm -rf
Question: How do you find out your own username? - whoami
Question: How do you send a mail message to somebody? - mail somebody@cinterviews.com -s ‘Your subject’ -c ‘cc@cinterviews.com‘
Question: How do you count words, lines and characters in a file? - wc
Question: How do you search for a string inside a given file? - grep string filename
Question: How do you search for a string inside a directory? - grep string *
Question: How do you search for a string in a directory with the subdirectories recursed? - grep -r string *
Question: What are PIDs? - They are process IDs given to processes. A PID can vary from 0 to 65535.
Question: How do you list currently running process? - ps
Question: How do you stop a process? - kill pid
Question: How do you find out about all running processes? - ps -ag
Question: How do you stop all the processes, except the shell window? - kill 0
Question: How do you fire a process in the background? - ./process-name &
Question: How do you refer to the arguments passed to a shell script? - $1, $2 and so on. $0 is your script name.
Question: What’s the conditional statement in shell scripting? - if {condition} then … fi
Question: How do you do number comparison in shell scripts? - -eq, -ne, -lt, -le, -gt, -ge
Question: How do you test for file properties in shell scripts? - -s filename tells you if the file is not empty, -f filename tells you whether the argument is a file, and not a directory, -d filename tests if the argument is a directory, and not a file, -w filename tests for writeability, -r filename tests for readability, -x filename tests for executability
Question: How do you do Boolean logic operators in shell scripting? - ! tests for logical not, -a tests for logical and, and -o tests for logical or.
Question: How do you find out the number of arguments passed to the shell script? - $#
Question: What’s a way to do multilevel if-else’s in shell scripting? - if {condition} then {statement} elif {condition} {statement} fi
Question: How do you write a for loop in shell? - for {variable name} in {list} do {statement} done
Question: How do you write a while loop in shell? - while {condition} do {statement} done
Question: How does a case statement look in shell scripts? - case {variable} in {possible-value-1}) {statement};; {possible-value-2}) {statement};; esac
Question: How do you read keyboard input in shell scripts? - read {variable-name}
Question: How do you define a function in a shell script? - function-name() { #some code here return }
Question: How does getopts command work? - The parameters to your script can be passed as -n 15 -x 20. Inside the script, you can iterate through the getopts array as while getopts n:x option, and the variable $option contains the value of the entered option.
Question: How do you find out what’s your shell? - echo $SHELL
Question: What’s the command to find out today’s date? - date
Question: What’s the command to find out users on the system? - who
Question: How do you find out the current directory you’re in? - pwd
Question: How do you remove a file? - rm
Question: How do you remove a - rm -rf
Question: How do you find out your own username? - whoami
Question: How do you send a mail message to somebody? - mail somebody@cinterviews.com -s ‘Your subject’ -c ‘cc@cinterviews.com‘
Question: How do you count words, lines and characters in a file? - wc
Question: How do you search for a string inside a given file? - grep string filename
Question: How do you search for a string inside a directory? - grep string *
Question: How do you search for a string in a directory with the subdirectories recursed? - grep -r string *
Question: What are PIDs? - They are process IDs given to processes. A PID can vary from 0 to 65535.
Question: How do you list currently running process? - ps
Question: How do you stop a process? - kill pid
Question: How do you find out about all running processes? - ps -ag
Question: How do you stop all the processes, except the shell window? - kill 0
Question: How do you fire a process in the background? - ./process-name &
Question: How do you refer to the arguments passed to a shell script? - $1, $2 and so on. $0 is your script name.
Question: What’s the conditional statement in shell scripting? - if {condition} then … fi
Question: How do you do number comparison in shell scripts? - -eq, -ne, -lt, -le, -gt, -ge
Question: How do you test for file properties in shell scripts? - -s filename tells you if the file is not empty, -f filename tells you whether the argument is a file, and not a directory, -d filename tests if the argument is a directory, and not a file, -w filename tests for writeability, -r filename tests for readability, -x filename tests for executability
Question: How do you do Boolean logic operators in shell scripting? - ! tests for logical not, -a tests for logical and, and -o tests for logical or.
Question: How do you find out the number of arguments passed to the shell script? - $#
Question: What’s a way to do multilevel if-else’s in shell scripting? - if {condition} then {statement} elif {condition} {statement} fi
Question: How do you write a for loop in shell? - for {variable name} in {list} do {statement} done
Question: How do you write a while loop in shell? - while {condition} do {statement} done
Question: How does a case statement look in shell scripts? - case {variable} in {possible-value-1}) {statement};; {possible-value-2}) {statement};; esac
Question: How do you read keyboard input in shell scripts? - read {variable-name}
Question: How do you define a function in a shell script? - function-name() { #some code here return }
Question: How does getopts command work? - The parameters to your script can be passed as -n 15 -x 20. Inside the script, you can iterate through the getopts array as while getopts n:x option, and the variable $option contains the value of the entered option.
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