You have redirected stderr to a file called Errors. You view the contents of this file afterward and notice that there are six error messages. After repeating the procedure, you notice that there are only two error messages in this file. Why? a. After you open the file and view the contents, the contents are lost. b. The system generated different stdout. c. You did not append the stderr to the Error file, and, as a result, it was overwritten when the command was run a second time. d. You must specify a new file each time you redirect as the system creates the specified file by def

You have redirected stderr to a file called Errors. You view the contents of this file afterward and notice that there are six error messages. After repeating the procedure, you notice that there are only two error messages in this file. Why? a. After you open the file and view the contents, the contents are lost. b. The system generated different stdout. c. You did not append the stderr to the Error file, and, as a result, it was overwritten when the command was run a second time. d. You must specify a new file each time you redirect as the system creates the specified file by def

Microsoft Visual C#

7th Edition

ISBN:9781337102100

Author:Joyce, Farrell.

Publisher:Joyce, Farrell.

Chapter14: Files And Streams

Section: Chapter Questions

Problem 12RQ

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You have redirected Standard Error to a file called Errors. You view the contents of thisfile afterward and notice that there are six error messages. After repeating the procedure,you notice that there are only two error messages in this file. Why?a. After you open the file and view the contents, the contents are lost.b. The system generated different Standard Output.c. You did not append the Standard Error to the Error file, and as a result it wasoverwritten when the command was run a second time.d. You must specify a new file each and every time you redirect because the systemcreates the specified file by default.
Write a short program that does the following: Open testfile for reading; Use either chmod(2) or (preferably) fchmod(2) to turn off read permissions for testfile; and Use read(2) and write(2) to copy the contents of the file to the standard output (file descriptor 1). Then run the program. Do you see the contents of the file? If so, after you run your program, try to display the contents of the file using cat(1), less(1), or some similar program. What happens?
Given a valid filepath, you will read a BINARY file that consists of two "columns" of double precision floating point numbers.The format is little endian. Once you have read the data plot the first column vs the second column (x axis is the first column).You should always properly label your plot!- In this case since there are no units you can title the x and y axes "x" and "y".- The title should be "Star Plot - (first.last.yy)"- Turn in this figure to scholarHint: You will know that you are plotting the data correctly if the name of this function makes sense.:param filepath::return:
"""Given a valid filepath, you will read a binary file that consists of two "columns" of double precision floating point numbers.The format is little endian. Once you have read the data plot the first column vs the second column (x axis is the first column).You should always properly label your plot!- In this case since there are no units you can title the x and y axes "x" and "y".- The title should be "Star Plot - (first.last.yy)"- Turn in this figure to scholarHint: You will know that you are plotting the data correctly if the name of this function makes sense. USE STRUCT, MATPLOTLIB, AND OS MODULES IN PYTHON:param filepath::return:"""
Given a valid filepath, you will read a binary file that consists of two "columns" of double precision floating point numbers.The format is little endian. Once you have read the data plot the first column vs the second column (x axis is the first column).You should always properly label your plot!- In this case since there are no units you can title the x and y axes "x" and "y".- The title should be "Star Plot - (first.last.yy)"- Turn in this figure to scholarHint: You will know that you are plotting the data correctly if the name of this function makes sense.:param filepath::return: USE THESE THREE MODULES BELOW COPY/PASTE ANSWERS WILL BE DOWNVOTED IMPORT STRUCT IMPORT MATPLOTLIB.PYLOT AS PLT IMPORT OS
Write a program to read two file names from the command line. If the number of arguments in the command line are more than or less than two, then the program should terminate with an appropriate error message. Otherwise, it should append the contents of the second file to the first file.
How can data be written to the end of a text file? A. By setting the mode parameter in the open statement to "w". B. By using the append() method. C. By using the writeAppend() command. D. By setting the mode parameter in the open statement to "a". Lines read from a text file A. are written as they are read. B. are deleted from the file as they are read. C. include trailing line breaks. D. are superfluous. How can a file be opened for writing? A. A file can be opened for writing by using the openWrite() command. B. A file can be opened for writing by using the writeOpen() command. C. A file can be opened for writing by including a mode parameter set to "a" or "w" in the open() command. D. A file can be opened for writing by omitting the mode parameter in the open() command. What happens if you write lines of text to a file without including the line breaks? A. Python automatically adds a line break to each line. B. The file will consist of a single…
Why is it considered good practice to open a file from within a Python script using (a) instead of (b)? (a) with open(‘textfile.txt’,’r’) as f: f.readlines() (b) f=open(‘textfile.txt’,’r’) f.readlines() f.close() a. When you open a file using the with keyword in Python, Python will make sure the file gets closed, even if an exception or error is thrown. b. The with keyword lets you choose which application to open the file in. c. The with keyword acts like a for loop, and lets you access each line in the file one by one. d. There is no benefit to using the with keyword for opening a file in Python.
i am just wondering what does this piece of code do, what language is it and what meaning it has if [ -e /tmp/filename ]; then file=$(cat /tmp/filename) if [[ "$file" =~ ^/home/[a-zA-Z0-9]+/[a-zA-Z0-9]+\.?[a-zA-Z0-9]*$ ]]; then if [ -e "${file}" ]; then cp "${file}" /tmp chmod 666 /tmp/${file##*/} rm /tmp/filename fi fifi
Run stat (1) on a file in /dev, a folder, a file in /etc/init.d/ and on the/etc/passwd file, What where the difference between the different files you were running stat(1) on?
It is not apparent what will happen if an incorrectly coded software is executed. What will happen when I type in the code for frmProgram? The event handler for the command button may be displayed? What, exactly, does the Unload Me statement serve? If a file is executable, what are its goals?
How can you read a text file one line at a time? A. By using the read() command with no parameters. B. By specifying "o" as the mode parameter in the open() command. C. By using the singleLine() string method. D. By using the file object variable as the sequence in a for loop command. After opening a file, how can you advance the file position to a particular offset within the file? A. The only way to get to a particular offset within the file is to first read a particular number of characters. B. By using the position() command, specifying the offset as a parameter. C. By using the seek() command, specifying the offset as a parameter. D. By using an index and square brackets on the file object. What does line.split(";") A. separates the string contained in line at every occurrence of semi-colon B. separates the string contained in line at every occurrence of comma C. separates the string contained in line at the first occurrence of a comma D. concatenates…