Explain what these commands do: a) mkdir -p dir1/dir2 b) head filename c) tail filename d) chmod +w *.py e) grep -n ‘^[D-H]’ filename f) rm -rf dir1 How likely would you use the -f flag with the rm utility in the last command? Is it a safe way to manipulate directories?
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Explain what these commands do:
a) mkdir -p dir1/dir2
b) head filename
c) tail filename
d) chmod +w *.py
e) grep -n ‘^[D-H]’ filename
f) rm -rf dir1
How likely would you use the -f flag with the rm utility in the last command? Is it a safe way to manipulate directories?
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- * Question Completion Status: exception Od. QUESTION 8 When the arguments in a function must be in the same order the parameters were written, we use arguments. O a. positional Default Values Ob. OC. Argument O d. Keyword QUESTION 9 Use the method to delete any whitespace exists at the left end of a string Click Save and Submit to save and submit. Click Save All Answers to save all answers. DELL F5 F6 F7 F8 F9 F10 F11 F12 PrtSc 50Filename: runlength_decoder.py Starter code for data: hw4data.py Download hw4data.py Download hw4data.pyYou must provide a function named decode() that takes a list of RLE-encoded values as its single parameter, and returns a list containing the decoded values with the “runs” expanded. If we were to use Python annotations, the function signature would look similar to this:def decode(data : list) -> list: Run-length encoding (RLE) is a simple, “lossless” compression scheme in which “runs” of data. The same value in consecutive data elements are stored as a single occurrence of the data value, and a count of occurrences for the run. For example, using Python lists, the initial list: [‘P’,‘P’,‘P’,‘P’,‘P’,‘Y’,‘Y’,‘Y’,‘P’,‘G’,‘G’] would be encoded as: ['P', 5, 'Y', 3, ‘P’, 1, ‘G’, 2] So, instead of using 11 “units” of space (if we consider the space for a character/int 1 unit), we only use 8 “units”. In this small example, we don’t achieve much of a savings (and indeed the…Please help me write the following function (please see the attached photos for context of the problem): find_treasure(start_map_num): Takes an integer between 0 and 9 as input. Loads the corresponding map file, and starts following the trail (at position 0, 0 of that file) as described above. Continues following the trail through other map files as needed. Places an 'X' at the conclusion of the trail and saves the updated treasure map to a new file with 'new_' prepended to the current map filename. Returns a tuple of the row and column index where the 'X' was placed in that file.
- GDB and Getopt Class Activity activity [-r] -b bval value Required Modify the activity program from last week with the usage shown. The value for bval is required to be an integer as is the value at the end. In addition, there should only be one value. Since everything on the command line is read in as a string, these now need to be converted to numbers. You can use the function atoi() to do that conversion. You can do the conversion in the switch or you can do it at the end of the program. The number coming in as bval and the value should be added together to get a total. That should be the only value printed out at the end. Total = x should be the only output from the program upon success. Remove all the other print statements after testing is complete. Take a screenshot of the output to paste into a Word document and submit. Practice Compile the program with the -g option to load the symbol table. Run the program using gdb and use watch on the result so the program stops when the…Format String Vulnerabilities: These occur when untrusted input is used as the format string in a formatted output function. This can allow an attacker to read or write arbitrary memory, leading to a security vulnerability. While this is more common with the printf family of functions, it can also occur with iostream if care is not taken. *Can you provide a simple iostream example of a format string vulnerability? How do you correct this vunlerability?*Task 2: Printing the time that the file path was created (50 points) The stat system call can access a file by name and retrieve file status information. It is given by: int stat (const char *pathname, struct stat *buf); This system call retums a stat structure (both the function and struct are called stat), which contains the following fields: struct stat { dev_t st_dev; /* ID of device containing file */ ino_t st_ino; /* inode number */ mode_t st_mode; /* protection */ nlink t st nlink; /* number of hard links */ uid t st uid; /* user ID of owner */ gid_t st gid; /* group ID of owner */ dev_t st_rdev; /* device ID (if special file) */ off t st size; * total size, in bytes */ blksize_t st_blksize; blocksize for file system IO */ blkent t st blocks; /* number of 512B blocks allocated */ time_t st_atime; /* time of last access */ time_t st_mtime; * time of last modification */ time_t st_ctime; /* time of last status change */ On success, zero is returned. On error, -1 is returned, and…
- IN PYTHON - please help with lines beginning with ###TODO import csvimport random as randimport sys # define functions def load_csv_data(filename): """ load the data from csv file returns a tuple containing two lists: col_names: first row of csv file (list of strings) row_data: all other rows of csv file (list of list of strings) if error is encountered reading filename, returns -1 """ try: data = [] ### TODO - load the data from csv file ### use csv.reader to append rows of filename to data except: print("Error loading data.") return -1 # if successful, return tuple of column names and row data col_names = data[0] row_data = data[1:] return (col_names, row_data) def display_menu(): ### TODO - print the main menu print("Main Menu") print("1 - Get Clean Sample") print("2 - Calculate Total Profit in Sample") print("Q - Quit") def get_valid_menu_option(): ### TODO - get valid menu…programming language: C++ How can you generate unique id with file handling and by using data structure like linked list or algorithm? System will search first in the file when it is not there, it will increment the largest number and then input it in the system whenever the user input a new video in the list. The file will look like this: 101,Raya and the Last Dragon,Animation,Walt Disney Studio,6102,Captain America: The First Avenger,Adventure ,Marvel,10100,Captain America,Adventure ,Marvel,8Q3:IN SML language how would I write a string to integer function that inputs a filename and returns zero if the contents inside the file is blank.
- CCDConnect < C X Dashboard - CCD X M5 Assignment 1 x ▸ How to install Or X https://mycourses.cccs.edu/d21/le/content/83491/viewContent/6197961/View Requirements for Your M5 Assignment 1 Pseudocode for Program Integration For the first module, write the pseudocode to process these tasks: (Note: lines beginning with # are comments with tips for you) 2. Define a class called Dice PDF Oracle 12c SQL ( 1. From the random module import randint to roll each die randomly a. # in pseudocode, import a random function b. # the name is helpful for the next M5-2 assignment a. In Python, the syntax has a colon after it: class Dice(): b. In pseudocode, you can specify it generally or be specific 3. Under the class declaration, list the attributes. Here are some tips: a. # attributes are what we know about a single die (dice is plural) b. # self is the first attribute in Python and must always appear first c. # add a num_sides attribute and to set it to 6 for the 6 sides on the dice 4. Define a method…save_compressed_image: takes a nested list and a filename (string) as input, and saves it in the compressed PGM format to a file with the given filename. If the image matrix given as input is not a valid compressed PGM image matrix, instead raise a AssertionError with an appropriate error message. >>> save_compressed_image([["0x5", "200x2"], ["111x7"]], "test.pgm.compressed") >>> fobj open("test.pgm.compressed", 'r') >>> fobj.read() = 'P2C\\n7_2\\n255\\n0x5 200x2\\n111x7\\n' >>> fobj.close() >>> image [["0x5", "200x2"], ["111x7"]] >>> save_compressed_image(image, "test.pgm") >>> image2 = >>> image True = == load_compressed_image("test.pgm") image2 • save_image: takes a nested list and a filename (string) as input. Checks the type of elements in the list If thou are intogors thon saves the posted list as a PCM imago matrix into a file with the givenHW1 Instructions: Your homework must have a cover page contains homework number, your name and student id. Submit the code on word file or pdf file. Write your name and student id as comment in the code (see the example). 回HW1 * HW1.Program B// Name: Your name // ID : Your university ID Busing System; using System.Collections. Generic; using System. Linq; using System. Text; using System.Threading. Tasks; 6. 7. 8. 10 Bnamespace HW1 11 O references class Program { 12 13 re static void Main(string[] args) Submit screenshot after running the code for each part (The screenshot must have your name and ID, see the example). ON CAWINDOWS\system32\cmd.exe Name: Your name ID : Your university ID MENU 1. Show grades 2. Show average 3. Max grade 4. Min grade 5. Modify a grade 6. Search by ID 0. Exit Please enter your choice: Write a menu program in C# that manages students grades for one class. The program lets the user select from a list of options, and if the input is not one of the options,…
