Chapter 3 ExercisesMake sure you attach screen shots or proof that you ran the answers in Puttyfor questions 4, 5 6, 7.1.What will be matched by the following regular expressions?1. x*2. [0-9]\{3\}3. xx*4. [0-9]{3,5\]}5. x\{5,\}6. ^\...7. x\{10\}8.9. [0-9]*.O. ^Begin$1. [0-9][0-9][0-9]2. ^..*\1$[A-Za-z_][A-Za-z_0-9]*2. What will be the effect of the following commands?3. who | grep 'mary' or who | grep '245'4. who | grep ^mary' or or who | grep '^245'5. grep '[Uu]nix' ch?/*6. Is-1 | sort -n-k 57. sed '/^$/d' text > text.out8. sed 's/[Uu]nix/\1(TM)/g' text > text.out9. date | cut-c12-16 4. who | grep ^mary or or who | grep 2455. grep '[Uu]nix' ch?/*6. Is -l | sort -n -k 57. sed '/^$/d' text > text.out8. sed 's/[Uu]nix/\1(TM)/g' text > text.out9. date | cut -c12-163. Write the command to find all logged-in users with usernames of at leastfour characters.4. Find all users on your system whose user IDs are greater than 99, and thenumber of users onyour system whose user IDs are greater than 99.Hint: /etc/passwd has all users with their ids.5. List all the files in your directory in decreasing order of file size.6.Explain what below command will do?find /tmp -name 'conf* -type f 2>/dev/null< PreviousNext ►

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1.What will be matched by the following regular expressions? 1. x* 2. [0-9]\{3\} 3. xx* 4. [0-9]\{3,5\} 5. x\{5,\} 6. ^\... 7. x\{10\} 8. 9. [0-9]* [A-Za-z_][A-Za-z_0-9]* 0. ^Begin$ 1. [0-9][0-9][0-9] 2. ^..*\1$

1.What will be matched by the following regular expressions? 1. x* 2. [0-9]\{3\} 3. xx* 4. [0-9]\{3,5\} 5. x\{5,\} 6. ^\... 7. x\{10\} 8. 9. [0-9]* [A-Za-z_][A-Za-z_0-9]* 0. ^Begin$ 1. [0-9][0-9][0-9] 2. ^..*\1$

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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1)/////JAVA Scrip// 1 DO NOT COPY FROM OTHER WEBSITES Upvote guarenteed for a correct and detailed answer. Thank you!!!.
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A user that inputs 1 and 3 into the following code will result in what output? board = ( ("-", "-", "-"), ("-", "-", "-"), ("_", "_", "-") ) col = int(input("X player, select a colum")) row = int(input("X player, select a row: ")) col = 1 row = 1 board [row] [col] = "X" print (board [0]) print (board [1]) print (board [2]) esc + co ['-', '-', 'X'] ['-', '-', '-'] ['-', An error when board[row][col] = "X" is executed. F1 ! 1 1 F2 #C 80 F3 3 $ 2 3 999 000 F4 % 4 F5 5 6 7 UN 2.1 L 2. 2.2 Loo 2.2 2.2. 2.2.3 2.2.4 MacBoo F