In Linux which of the following command is used to count number of lines in a file
The practice of counting lines in the file is usually adopted by the developers to determine the length of their code or the program. They do so to find out the efficiency of the program, the program having fewer lines performing the same task compared to the program of greater lines is assumed to be more efficient. In Linux, there are different methods to count the number of lines in the files, all of these methods are
discussed in this article in detail. We have a text file in the home directory with the name “myfile.txt”, to display the contents of the text file, use the command: Method 1: Using the wc commandThe one method to count the number of lines is by using the “wc” command with the “-l” flag which is used to display the count of lines: You can also use the wc command with the cat command to display the count of lines of a file: Method 2: Using the awk commandAnother method to count the lines of the file in Linux is by using the command of awk: $ awk 'END{print NR}' myfile.txt Method 3: Using the sed commandThe “sed” command can also be used in Linux to display the line count of the file, the use of the sed command for the purpose of displaying a number of lines is mentioned below: Method 4: Using the Grep commandThe “grep” command is used to search, but it can be used for counting the number of lines as well as to display them, for this purpose, run the following command and replace the “myfile.txt” with your file name in the command: $ grep -c ".*" myfile.txt In the above command, we have used the “-c” flag which counts the number of lines and “.*” is used as a regular pattern or we can say to find out the strings in the file, another way to use the grep command such that it also displays file name in output is the use of the “-H” flag: $ grep -Hc ".*" myfile.txt Method 5: Using the nl commandThe number line command (nl) is used to display the numbered bullets with the lines of the file: If you want to display just the number of lines, then use the awk command with the nl command: $ nl myfile.txt | tail -1 | awk '{print $1}' Method 6: Using the Perl language command:Perl language command can also be used for the counting of the lines of the files in Linux, to use Perl command to count the lines of the file “myfile.txt”, execute the command: $ perl -lne 'END { print $. }' myfile.txt Method 7: Using While loopAnother most commonly used method to count the number of lines of the large files is using the while loop. Type the following bash script in the text file, and save it with .sh extension: #!/bin/bash Execute the bash file using the bash command: In the above output, on the execution of the command, it asks for the file name whose lines are to be counted, types the file name, in our case, it is “myfile.txt”, so it displays the results. ConclusionTo calculate the productivity of the programmers, the main parameter is the length of their code, which can be measured by counting the lines of the code file. In Linux, we can count lines in different ways that are discussed in this article, the most commonly used method is the wc command method. About the authorI'm an Engineering graduate and my passion for IT has brought me to Linux. Now here I'm learning and sharing my knowledge with the world. What is the command to count the number of lines in a file in Linux?The wc command is used to find the number of lines, characters, words, and bytes of a file. To find the number of lines using wc, we add the -l option. This will give us the total number of lines and the name of the file.
What is the count command in Linux?wc stands for word count. As the name implies, it is mainly used for counting purpose. It is used to find out number of lines, word count, byte and characters count in the files specified in the file arguments.
Which of the following command will count lines in a file?Use wc –lines command to count the number of lines. Use wc –word command to count the number of words.
Which command is used to count the lines words in file?Use the wc command to display a count of the lines, words, and characters in a file. The wc command reads one or more input files and, by default, writes the number of newline characters, words, and bytes contained in each input file to the standard output.
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