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$

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter7: Characters, Strings, And The Stringbuilder

Section: Chapter Questions

Problem 3GZ

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