You want to search for a particular file, main.conf, using the find utility. This file most likely is located somewhere in the /etc/ directory tree. Which of the following commands is the best one to use in this situation? O find /etc/-maxdepth -name main.conf O find -r /etc -name main.conf O find / -name main.conf O find main.conf/etc O find /etc -name main.conf
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- I need help debugging this. // Cooper College maintains a master file of students and credits // earned. Each semester the master is updated with a transaction // file that contains credits earned during the semester. // Each file is sorted in Student ID number order. start Declarations num masterID string masterName num masterCredits num transID num transCredits string bothDone = "N" num HIGH_VALUE = 999999 InputFile master InputFile trans OutputFile newMaster getReady() while bothDone = "N" detailLoop() endwhile allDone() stop getReady() open master "studentFile.dat" open trans "semesterCredits.dat" open newMaster "updatedStudentFile.dat" readMaster() readTrans() checkBoth() return readMaster() input masterID, masterName, masterCredits from master if eof then masterID = HIGH_VALUE endif return readTrans() input transID, transCredits from trans if eof then…Answer the given question with a proper explanation and step-by-step solution. 1.In the following path name, what is the name of the highest level directory? C:\Windows\System\Calc.exe 2.Typically, dictionary data is lost when a program terminates unless you use a special shelve function. Question 14 options: True False 3.Example of a method used with Regex is: open find replace searchwrite a batch script/ Batch file for windows ( file.bat) to sort by column for a table this script will be able to show to the user a few options. the user will choose between : sort -i sort -n sort -w sort -l sort -c sort -a i for id , n for name , w for weight , l for long , c for class , a for age. The textfile : ID Name Weight Long Class Age012 Eric 56 156 7 13045 Richard 78 178 9 17098 Maya 60 164 10 16072 Anna 56 152 8 14034 Helena 76 169 11 18022 Kevin 66 162 6 12093 Peter 99 170 12 19
- Question 1 Which of the following are regular files and directory files contained in the JAR file that is provided with the HWO5 starter code? When listing the contents of the JAR file, you can ignore any differences in capitalization of the filenames if you notice any. C cs1302/adt/StringList.class C cs1302/adt/Node.class META-INF/MANIFEST.ME Ccs1302/adt/Stringlist.java C cs1302/ C META-INF/ C cs1302/adt/ LinkedListDriver package cs1302.listadt; public class Driver { public static void main (String[] args) { Node node = new Node ("Tom"); node.setItem ("Susan") ; node.setNext (new Node ("Sally")); node.getNext (). setNext (new Node ("Barry")); Node end = new Node ("Supa Mike", node); Node n = node.getNext () ; n.setNext (new Node ("Simon")); System.out.println (end.getNext ()); // Output 1 System.out.println (node.getNext ().getitem ()); // Output 2 System.out.println (n.getNext ().getNext ()); // output 3 System.out.println (n.getNext ().getItem ()); // Output 4 } // main } // Driver…Write the command that will create a compressed tar archive of all the files in the directory named"/farmer/brown/red/barn". The directory resides on the local machine. The name of the tar archiveis "/animals/squeezed". The command should be executed from the directory "/houston/texas".Question 5: findWrite a simple version of the Linux find program: find all the files in a directory tree whose namematches a string.Some hints:·Look at ls.c to see how to read directories.·Don’t try to find any files in the “.” and “..” directories.·Changes to the file system persist across runs of QEMU; to get a clean file system run makeqemu.Your solution is correct if produces the following output (when the file system contains a file a/b):$ make qemu ...init: starting sh$ echo > b$ mkdir a$ echo > a/b$ find . b./b./a/b$
- In this task, we would like to generate a keyed hash (i.e. MAC) for a file. We can use the “-hmac” option (this option is currently undocumented, but it is supported byopenssl). The following example generates a keyed hash for a file using the HMAC-MD5 algorithm. The string following the “-hmac” option is the key. “openssl dgst -md5 -hmac "abcdefg" filename” Please generate a keyed hash using HMAC-MD5, HMAC-SHA256, and HMAC-SHA1 for any file that you choose. Please try several keys with different lengths. 1. Do we have to use a key with a fixed size in HMAC? 2. If so, what is the key size? 3. If not, why?In this assignment you will be writing several functions that process files and dictionaries to encryptand decrypt messages. A dictionary will be used to create a random substitution cypher. Each letterof the alphabet will be mapped to another random letter in the alphabet. No letter will map or bemapped to any duplicate letter. For example given the partial dictionary below you can encrypt amessage.Be sure to use the starter file provided so you can see the appropriate outputs. Be sure to downloadand place the appropriate text files in the same directory as your python file. You only need to submityour python file.Partial Dictionary: {d : a, e: f, h : b, l : p, l : e, o : j, r: m, w: i}originalMessage = “hello world” → encryptedMessage = “bfeej ijmea” Part 1 - Encrypt a Message: You will write 2 functions to build a dictionary and encrypt a messageFunction buildCypher() → dict:This function is to build a dictionary that can be used to create a random substitution cypher. Yourgoal is…In this assignment you will be writing several functions that process files and dictionaries to encryptand decrypt messages. A dictionary will be used to create a random substitution cypher. Each letterof the alphabet will be mapped to another random letter in the alphabet. No letter will map or bemapped to any duplicate letter. For example given the partial dictionary below you can encrypt amessage.Be sure to use the starter file provided so you can see the appropriate outputs. Be sure to downloadand place the appropriate text files in the same directory as your python file. You only need to submityour python file.Partial Dictionary: {d : a, e: f, h : b, l : p, l : e, o : j, r: m, w: i}originalMessage = “hello world” → encryptedMessage = “bfeej ijmea” Part 1 - Encrypt a Message: You will write 2 functions to build a dictionary and encrypt a messageFunction buildCypher() → dict:This function is to build a dictionary that can be used to create a random substitution cypher. Yourgoal is…
- write a batch file which it can Sort based on the column in file. Important that the user can choose which column . Look what is batch file : https://en.wikipedia.org/wiki/Batch_file The textfile : ID Name Weight Long Class Age012 Eric 56 156 7 13045 Richard 78 178 9 17098 Maya 60 164 10 16072 Anna 56 152 8 14034 Helena 76 169 11 18022 Kevin 66 162 6 12093 Peter 99 170 12 19Create a new directory, Labe9 Create a file named Labe9.md based on the template. • Raw version of LabTemplate.md For each part below, you will be asked to do an action or answer a question. The actions are going to be commands - you will write the command you used as "answers" to the action requested. You are allowed to use multiple commands to solve an action. Just write down all that were needed to complete. Check with the TAs if you need clarification. If you did something "wrong" make a note of it in your lab. These are learning experiences - writing them down will help you ask good questions later. O Part 1- Write Code Use Java or Cor C++ to write an echo program. Name your source code file repeat with the appropraite source code extention: repeat.java , repeat.c, repeat.cpp . The program should be the following: • prompt the user to enter text • capture text from standard input • output the captured text back to standard output • Additional notes o Code integrity does not matter…Above the base file, we build two indexes (ISAM and B+), which are identical at the beginning.• How do the indexes change if we first add a record with key 41 and then a record with key 23?