Write a BASH command to assign the string "/usr/share/data" to an environment variable called DATADIR.
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Write a BASH command to assign the string "/usr/share/data" to an environment variable called DATADIR.
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- Make sure to do the proper exception handling in your code. Write shell script for a simple calculator which can perform basic arithmetic operations like addition, subtraction, multiplication or division depending upon the user input in Bash.Make sure to do the proper exception handling in your code.Your very own .bashrcfile Create your own .bashre file that sets various variables and aliases. Log out and back in again (pressing will exit from the bash shell and you can then log back in again by typing the bash command). Include the bash script in your report and a transeript of sample testing to show that the script works.Write a bash script that accepts aperson’s name as a command-line argument and simply prints out the following greeting: "Good day, <name_entered>! Nice to meet you!", where <name_entered> is a positional parameter (i.e., a command-line argument) passed to the script. If the user does notenter a command-line argument when invoking this shell script, you will simply output: "Hope you have a great day!", without any name displayed. How to do this??
- CSE460 MID ASSIGNMENT Given the Linux shell command descriptions, please write down the corresponding shell commands in a terminal window. • Copy paste the shell commands(using Control+shift+C) to do the following • give screenshots so that I can understand b) Write a shell script, which first ask the user for a number. then, -> Print "Panther" if the number is divided by 10 but is neither a multiple of 4 and neither a multiple of 5. -> Print "Oodama_Rasengan" if the number is a multiple of 5 or 6, but not both. -> Print "Rasen_Shuriken" if the number is a multiple of both 5 and 6Write a shell script for a simple calculator which can perform basic arithmetic operations like addition, subtraction, multiplication, or division depending upon the user input in Bash. + check if the user enters a number or not? Make sure to do the proper exception handling in your code.Write a bash program that takes in a word and a filename from the command line and print out the number of occurrences of the word in the file. Name the program count_word.sh. Your program should work as follow:hb117@uxb5:~$ ./count_word.sh global /home/hb117/shared/cs371/lab04/global.txt global 9 hb117@uxb5:~$ ./count_word.sh nuclear /home/hb117/shared/cs371/lab04/global.txt hb117@uxb5:~$ add awk to your pipe
- Write a bash shell script program that prompts the user to enter a list of 10 student names and check the number of occurrences of "Emily". Your program should display the result. Sample input: Emily Susan Lily Ashley John Alex Nancy Tim Michael Emily Your program output should be: Emily appeared 2 timesQuestions: Answer the below questions inside the script itself. How is a comment written in a script? 2.What is a self-documenting variable or argument? Give an example. Application: Write a skeleton script titled: skeleton.sh. Include the following in the script: The shebang to BASH Comments that include: The name of the script file Name of the original author Date written Date last modified Purpose Brief description of the implementation of the script Save the script in your bin directory.Lastly: Upload a copy of the script file.Given a directory called Project1 with 500 files called rock000.py, rock001.py, ... , rock500.py, create a bash shell script that will rename all the files given in this directory. The script should take two arguments: a base name and a file extension. Please include the specifics from the example in the code (i.e., identify the base name, extension, and old and new file names and write them as part of the code). If we run bash project.sh project_rocks py the resulting files in the directory should be like this: project_rocks000.py, project_rocks001.py, .. , project_rocks500.py.
- Write a c program that takes one-word bash commands as user entered input, dynamically allocates memory, runs the command, frees memory, and asks the user if they would like to run another command. Specifically, your program must: 1. Dynamically allocate memory for a user entered command2. Ask the user to enter a bash command3. Run the bash command4. Free the memory allocated to the user command5. Ask the user if they would like to run another commandmWrite a bash script that would reside in the test directory, would take an integer as its sole command line argument, and would return a count of the number of project test cases involving exactly that many test files with extension ".bld". The test directory contains subdirectories which each have various numbers of test files in them. So the idea would be:E.g. ./countTests.sh 3 would count and return the number of test cases involving exactly three test files with extension ".bld"In this question, you will develop your own version of shell. Your shell will execute commands given by the user. The steps involved will be as follows: 1.User types a command, such as “cp ./OS ../newOS”. The command will be stored in a character array or a string object. 2.Shell will perform tokenization and separate the command and its arguments. 3.Shell will create a child process and use execvp system call to execute the command. 4.Shell will wait for the command to finish execution. 5.After the command has been executed, shell will ask the user to enter the command again. 6.Shell will exit when the command given by the user is “exit”.
