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POS 433 Week4 Unix Individual Assignment

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University of Phoenix Material

File Processing Commands Worksheet – 15 Marks – Week 4

  1. A. who | uniq | sort | wc -l B. who | cut -d' ' –f1 | uniq | wc -l C. who | sort | uniq | wc -l D. who | cut -d' ' –f1 | sort -u | wc -l E. who | cut -d' ' –f1 | uniq -d | wc -l Ans: 2. Create a file “employees.txt” using vi editor or pico.

(The file will have 6 fields, ID, Name, Designation, Dept, D.O.B, Salary separated by pipe)

Enter these lines in the file and save it.

2133|charles smith |Manager|sales|12/12/56| 90000 9576|Rob Thomson|director |production|03/12/50|130000 5778|David Blake |General Manager|marketing |04/19/43| 85000 2765|Rick Martin|director|personnel |05/11/47|120000 (Use cut command for the following questions A,B) (in each one mark, ½ is for the command and ½ for the output)

  1. Show the command and output

Ans:

B: Display first 20 characters on each line in the above file. Show the command and output

Ans:

  1. Show the command and output

( ½ is for the command and ½ for the output)

Ans:

  1. $ who | grep 'mary' and $ who | grep '^mary' Ans:

Show the command and output

( ½ is for the command and ½ for the output)

Ans:

Chapter1 :

This is the first line in this file

This chapter deals with the basic information of a UNIX system.

Chapter2 :

This is the first line in this file

This chapter deals with Unix System info and shell introduction.

Chapter3 :

This is the first line in this File System

This chapter deals with various Unix Systems.

Chapter4 :

This is the first line in this file

This chapter deals with kernel system.

The question is to search for a string "System" or "system" in the above files. Use wild cards in both pattern and file searching. (1) Show the command and output

( ½ is for the command and ½ for the output)

Ans:

(½ is for the command and ½ for the output)

Ans:

  1. a. cat file file > file3 | wc -l b. cut -d ":" filename c. ls -l | grep unix myfile d. head filename | tail e. find name "myfile.txt" -print 9. We know that ls -l command shows all the files in the current directory. How do you display only the directories, not files in the current directory. (You have to use ls command, but not find command) (1)

Ans:

  1. Ans:
  2. Ans:

-rw-rw-rw- 2 Y435678 odms 22 Sep 02 12:03 myfile.txt

Is the above a file or a directory? To which group does it belong? (1) Regular file, Y435678 file, Y435678 file, odms directory, odms directory, Y435678

Ans :

-rw-r----- 1 Y435678 odms 20 Sep 02 17:03 file.txt.

What are the owner permissions?

read, execute read, write write, execute all since s/he is the owner

Ans:

  1. Tom Smith 7.00 15 105.00 Rob Sheryl 8.00 20 160.00 Ken Bradman 7.00 13 91.00 Peter Smith 6.00 15 90.00 Dennis Smith 8.00 13 104.00 Tom Dave 9.00 12 108.00

How do you sort the above file and redirect the output to another file called sortedusers

Ans :

University of Phoenix Material File Processing Commands Worksheet – 15 Marks – Week 4 A. who | uniq | sort | wc -l B. who | cut -d' ' –f1 | uniq | wc -l C. who | sort | uniq | wc -l D. who | cut -d' ' –f1 | sort -u | wc -l
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