Write a grep command using a single pipe to find all lines that contain the string raise taxes in the contents of a file called SurveyData under a directory called TAXES that is under the current directory, and display the first line.
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Write a grep command using a single pipe to find all lines that contain the string raise taxes in the contents of a file called SurveyData under a directory called TAXES that is under the current directory, and display the first line.
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- Write your own WASM file called print_name.wat in your home directory. It must print your name followed by one newline character when it is executed. To submit the file, run submit01 at the command line.It will tell you whether you have saved the file in the right place.1. In an earlier assignment, you created a fileAsst directory containing several files. Give a command that will create a file named listing.dat, in your current (commandsAsst) directory, containing a list of the names of all the files in your fileAsst directory. The listing must not include dates, file sizes, or any information other than the names. 2. Someone has decided that the function sequentialInsert, declared in -cs252/Assignments/commandsAsst/project/arrayops.h, should be renamed orderedInsertion. Give a command to produce the altered version the header file, saving it as ~/UnixCourse/commandsAsst/arrayops.h (Something to think about: Why would the same approach not work well for changing the variable name i to i0?) 3. Sometimes programmers propose changes to an existing software definition and need to know what other code could be affected by the change. Suppose that you are a programmer who has proposed a change to the C/C++ data type known as "timespec". You know that there…We will use the file classlist.txt. Note that it contains a list of usernames. 3. Write a script called finduser that is to be called as follows, where classlist is the name of the classlist file, and username is a particular student's username, either first name or last time. ./finduser classlist username The script should check that the correct number of arguments was received and print an error message if not, check whether the classlist file exists and print an error message if not, print the line of the given username in the classlist file If you have not been doing so all along, you should now add some comments to your script and thoroughly test it! 4. Write the script into your lab report.
- Write a grep command that will match all words in a file that have exactly one 'a'.Suppose I wrote a simple program to take in a filename from a user and then, using that given filename my program would execute a command to copy that file to a particular location (such as my own submission directory). I then made that program executable by someone else. For example, if they gave me a filename "dog.txt", my program would create a string called "cp dog.txt subfolder" and then execute it using the system command. What would I need to do to ensure that nothing malicious was allowed to happen?Write the command taht will locate all files that have the suffix/extension of ".py". For each file that is located, the command should append the suffix/extension of ".backup" to the file. So, if a file had the name "one.py", its new name would be"one.py.backup".
- Given the variable names pathName contains a string describing a directory path, write a statement that will store the names of all files in a List structure named volume. DO NOT traverse the path/directory. You are only interested in the immediate path. You may assume that any neccesay statments already exist.Write a script named listEmptyDir.sh that will do the following: a. Take a name of a directory as a parameter; b. Loop through all files in this directory and display their names; c. If a file is a directory and has no files in it (empty directory), add the name of this empty directory to the file EmptyDir.txt in your current directory.Note: These tasks do not have to be done in one single command. They can be done in a series of commands working on different files, or piped from one command to another. In fact, I would suggest breaking the task up if that would make some of them easier. 1) Insert a heading line as follows to the top of the file and output the resulting data to a file called move1.txt. Name Phone Number Jan Feb Mar 2) Duplicate the file in a file called move2.txt, except replace the name Hauschild with Housechild 3) Put the list of donors (only their full name, no other data) with area code 916 in a file called move3.txt
- modify minishell.c to run who, ls, and date with option. who will show the count of users, ls will list files in long listing format and date will show UTC time. Modify this file so the shell can run commands with options.*/#include <stdio.h>#include <unistd.h>#include <sys/types.h>#include <sys/wait.h>#include <stdlib.h>#include <fcntl.h> int main(int argc, char *argv[]){ char *cmd[] = {"who", "ls", "date"}; int i; while(1){ printf("0=who 1=ls 2=date : "); scanf( "%d", &i ); if(i<0 || i>2) continue; pid_t result= fork(); if(result==0) { /* child */ execlp( cmd[i], cmd[i], (char *)0 ); printf("execlp failed\n"); exit(1); } else if (result >0){ /* parent */ int status; wait(&status); } else{ //handle error } } return 0;}In UNIX Say there is a file, students, under your home directory. Here is the content of the file students: 1001, Joe Smith, 111 Main Street 1002, Mary Johnson, 287 Broadway Ave 1003, Taylor Farlan, 255 Becker Street Use cut command to show only the third column of the file (only write down the command)The delivery drones have a internal reporting and logging system thatrecords events and issues during flights. These logfiles contain the last 1000events/messages as well as their status codes.The Logfile FormatBy default, the logfiles are all called ‘logfile.txt’. Each logfile is exactly 1000 lineslong.Each entry in the file consists of 4 fields:1. a line number (starting at 0)2. a POSIX timestamp3. a message/event type4. an event descriptionEach field (line number, timestamp etc.) is separated by a space, except for thedescription which ends with a full stop.Log events come in three different types: NOTIFY, WARNING, and ERROR. Task 1: Display Because the logfiles are so big, we would only like to display a certain number oflines at a time. We prompt the user to choose start and end line numbers andprint all the lines from start to end (inclusive).The input constraints are as follows: 0 start end 999You can safely assume that the inputs will fall within that…