What does the following command do: cat humans | sort | uniq | wc -l A....

Question

Question

What does the following command do: cat humans | sort | uniq | wc -l A....

What does the following command do:

cat humans | sort | uniq | wc -l

	A.	reads the file "humans", sorts it, only retains unique lines, and counts the number of lines remaining
	B.	reads the file "humans", sorts it, only retains the non-unique lines, and counts the number of lines remaining
	C.	reads the files "cat" and "humans", sorts them, only retains lines with "uniq", and counts the number of lines remaining
	D.	reads the files "cat" and "humans", sorts them, only retains unique lines, and counts the number of lines remaining
	E.	reads the files "cat" and "humans", sorts them, only retains non-unique lines, and counts the number of lines remaining

science biology

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

cat command means read the file. Here, the file is humans.

sort command means "to sort"

uniq command means to retain only unique lines.wc-l means to count the number of lines remaining

Hence, option A is correct.

Add a comment

Answer 2

Similar Homework Help Questions

Use CAT and pipe to wc –l to get a count of the number of entries...

Use CAT and pipe to wc –l to get a count of the number of entries in ‘foo.txt’ Use SORT and pipe to UNIQ with the –c switch to output a list of duplicate lines preceded by the number of times the line occurs. Your output should look something like this: . . 2 coo 3 foo 1 moo Use SORT and pipe to UNIQ with the –d switch to output only repeated lines,...
Examine the following script, n-on: who | sort | awk '{print $1}' | uniq | wc...

Examine the following script, n-on: who | sort | awk '{print $1}' | uniq | wc -l What will be the output of n-on? (A) The number of processes running for each user that is currently logged on to the system. (B) The number of users logged on to the system at the time the script is run. (C) The date and time of your last login to the system. (D) A list of all the users currently logged on...
Using Ubuntu OS... help is greatly needed! Thank you. Create an alias called "home" that does...

Using Ubuntu OS... help is greatly needed! Thank you. Create an alias called "home" that does two things... returns you to your home directory, then does a long listing of all files found there Create a file called "Output.txt" that contains the output of the "ls /etc" command Using "cat", create a file called "poem.txt" where you enter at least one line of text ("Mary had a little lamb" will do...) Using "cat", pipe the contents of poem.txt into the...

QUESTION 1 What will be the output of following Unix command: find / -name ‘*’ A....

QUESTION 1 What will be the output of following Unix command: find / -name ‘*’ A. List all files and directories recursively starting from / B. List a file names * in / C. List all files in / directory D. List all files and directories in / directory QUESTION 2 Which command is used to extract a column/field from a text file / input. A. paste B. get C. cut D. tar QUESTION 3 Which command creates an empty...
C ++ Implement cat command The purpose of this assignment is to provide practice using the...

C ++ Implement cat command The purpose of this assignment is to provide practice using the system calls we discussed for working with files on a UNIX system. You will be writing a basic implementation of the cat command using C++. Description As you should recall, the cat command takes a list of files as command line arguments. It then opens each file in turn, writing each file’s entire contents to standard output in the order they were supplied. You...
C ++ Implement cat command The purpose of this assignment is to provide practice using the...

C ++ Implement cat command The purpose of this assignment is to provide practice using the system calls we discussed for working with files on a UNIX system. You will be writing a basic implementation of the cat command using C++. Description As you should recall, the cat command takes a list of files as command line arguments. It then opens each file in turn, writing each file’s entire contents to standard output in the order they were supplied. You...

used Linss file systems d FAT nd NTFS NTFS and est3 h ReiserFS and ext3 15....

used Linss file systems d FAT nd NTFS NTFS and est3 h ReiserFS and ext3 15. A fie a hem ppicaly you might possibly sreae entries for all the ie than enongheir that file sy stemtains ore than enough 16. To create a syesbolic link, use the a. In command h In command with the -s optiorn d. symlink command You can learn numerous details about any file using the 17 s brip2 and buenion etitities in Linux? d. gzip...
Question 11 1 point possible (graded) The commands in the pipeline $ cat result.txt | grep...

Question 11 1 point possible (graded) The commands in the pipeline $ cat result.txt | grep "Harvard edX" | tee file2.txt | wc -l perform which of the following actions? From result.txt, select lines containing “Harvard edX”, store them into file2.txt, and print all unique lines from result.txt. From result.txt, select lines containing “Harvard edX”, and store them into file2.txt. From result.txt, select lines containing “Harvard edX”, store them into file2.txt, and print the total number of lines which were...
A filename con comprise multiple embedded dots (e.g., a.b.c.d.e). True False A device file is not...

A filename con comprise multiple embedded dots (e.g., a.b.c.d.e). True False A device file is not really a stream of characters and doesn't contain anything at all. True False Relative pathnames begin with the root directory. True False Running the ls -a command uniquely identifies directories and binary executables. True False What is the result of running mkdir -p share/man/cat1 from the command line? a. It creates the directory share. b. It creates the directory share/man. c. It creates the...

QUESTION 1 From YOUR home directory, execute a find command string that will locate the file...

QUESTION 1 From YOUR home directory, execute a find command string that will locate the file called resolv.conf. Include the -exec flag in the find command to cat the file to the screen. Begin your find search from the letc directory. Select the correct find command string below that will accomplish this. find /etc -name 'resolv.conf-cat f} \; find /etc -name 'resolv.conf' -exec cat {} \; find . -name 'resolv.conf' -exec cat {} \; O find / -name 'resolv.conf' -exec...

What does the following command do: cat humans | sort | uniq | wc -l A....

Homework Answers

Add Answer to:
What does the following command do: cat humans | sort | uniq | wc -l A....

Post as a guest

Earn Coins

Use CAT and pipe to wc –l to get a count of the number of entries...

Examine the following script, n-on: who | sort | awk '{print $1}' | uniq | wc...

Using Ubuntu OS... help is greatly needed! Thank you. Create an alias called "home" that does...

QUESTION 1 What will be the output of following Unix command: find / -name ‘*’ A....

C ++ Implement cat command The purpose of this assignment is to provide practice using the...

C ++ Implement cat command The purpose of this assignment is to provide practice using the...

used Linss file systems d FAT nd NTFS NTFS and est3 h ReiserFS and ext3 15....

Question 11 1 point possible (graded) The commands in the pipeline $ cat result.txt | grep...

A filename con comprise multiple embedded dots (e.g., a.b.c.d.e). True False A device file is not...

QUESTION 1 From YOUR home directory, execute a find command string that will locate the file...

What does the following command do: cat humans | sort | uniq | wc -l A....

Homework Answers

Add Answer to: What does the following command do: cat humans | sort | uniq | wc -l A....

Post as a guest

Earn Coins

Add Answer to:
What does the following command do: cat humans | sort | uniq | wc -l A....