Question

Question 1) Copy file called sortfile from my home directory. The file contains three columns of information : username, uid number and group name respectively, separated by a field separator.

Will the following command sort the file on the group name field?

sort -t! -k3 sortfile

A) Yes

B) No

Question 2) Copy the file called sortfile from my home directory. The file contains three columns of information : username, uid number and group name respectively, separated by a field separator.

The following command will reverse sort the the file numerically on the uid.

sort -t! -k2rn sortfile

A) True

B) False

Question 3) Create a sort command string that willnumerically sort the file called /etc/group on the GID field (3rd field).

Complete the command string below to meet the above statement.

sort -t: -### /etc/group

Replace the ### with the correct characters to complete the commmand string.

Provide ONLY the characters that replace the ### in your answer.

Answer ___________

Question 4) cd to my home directory.

Execute the command: ls -l | sort -k5n

This command will sort the ouput of the ls command by the file size and list the largest file last.

A) True

B) False

Answer 1

Solution

Question 1) Copy file called sortfile from my home directory. The file contains three columns of information : username, uid number and group name respectively, separated by a field separator. Will the following command sort the file on the group name field? sort -t! -k3 sortfile A) Yes B) No Question 2) Copy the file called sortfile from my home directory. The file contains three columns of information : username, uid number and group name respectively, separated by a field separator. The following command will reverse sort the the file numerically on the uid. sort-t! -k2rn sortfile A) True B) False Question 3) Create a sort command string that willnumerically sort the file called /etc/group on the GID field (3rd field). Complete the command string below to meet the above statement. sort -t: -### /etc/group Replace the ### with the correct characters to complete the commmand string. Provide ONLY the characters that replace the ### in your answer. Answer Question 4) cd to my home directory. Execute the command: Is - 1 sort-k5n This command will sort the ouput of the Is command by the file size and list the largest file last. A) True B) False ver

Explanation

Question 1

Option k is used to specify the key to be used to sort the file. In this case, it is 3 which indicates the column

so answer is true

Question 2

the correct command is

sort -t! -k2nr sortfile

so answer is false

Question 3

k3 specifies the third column

To sort a file numerically used –n option

so answer is -k3n

Question 4

True

maverick@maverick-Inspiron-5548:-$ ls -1 total 44892 -rw-rw-r-- 1 maverick maverick 1176 Feb 16 00:19 1.0 -rwxrwxr-x maverick maverick 9008 May 10 22:54 a.out -rw-rw-r-- 4 maverick maverick 434 Mar 29 22:18 ass8_1.0 -rw-rw-r- 1 maverick maverick 19920 Feb 16 00:20 binary.txt -rw-rw-r- 1 maverick maverick 67 May 31 13:16 cfile.c -rw-rw-r-- 1 maverick maverick 187 May 31 13:21 C++file.cpp -rw-rw-r- 1 maverick maverick 1552 May 31 13:37 cfile.o -rwxrwxr-x 1 maverick maverick 8120 May 31 13:37 cfile.so -rw-rw-r- 1 maverick maverick 1017 Feb 17 04:43 client.c drwxr-xr-x 2 maverick maverick 4096 May 27 22:28 Desktop drwxr-xr-x 2 maverick maverick 4096 Apr 2 04:11 Documents drwxr-xr-x 2 maverick Maverick 4096 May 31 13:12 Downloads -rw-rw-r-- 1 maverick maverick 54 Mar 29 22:23 end.txt drwxrwxr-x 11 maverick maverick 4096 Nov 18 2016 Exam -rw-r--r-- 1 maverick Maverick 8980 Nov 6 2016 examples.desktop drwxr-xr-x 6 maverick maverick 4096 Nov 18 2016 FALCONN-1.2 -rw-rw-r-- 1 maverick maverick 513 May 10 22:47 fifo1.c -rw-rw-r-- 1 maverick maverick 496 May 10 22:47 fifo2.c -rw-rw-r- 1 maverick maverick 152 Jun 3 16:43 first.txt

from, the picture we know 5th column is file size

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all the best