Count lines in a file bash script

Question : I have a file on my Linux system having a lot of lines. How do I count the total number of lines in the file?

There are several ways to count lines in a file. The wc utility displays the number of lines, words, and bytes contained in each input file, or standard input if no file is specified to the standard output. You can have any command here instead of cat. Output from any command can be piped to wc command to count the lines in the output. ThenIf you want to display only the number of total lines without displaying the file name, you can use a left angular bracket in the command.

Here the command shell has redirected the file1. The content will act as input for the content part after the pipe in the command. The received output is concurrent in both cases.

But the way of use is different. The stream editor specifies that it is used to transform the text of the file. This is mostly used in the command where we need to find the required text and then replace it. The first one is the equality sign.

This combination will bring the blank lines plus the numbering of lines. The content will not be shown here. Only the line numbers are displayed here. In the second option, we will use the dollar sign in addition to the equality sign. Unlike the last example, we will come to know the total number of lines only, not the context. Sometimes we need to have the last line number instead of having the numbers of all the lines of the filefile lines, ; for this, we use this approach.

All the lines are considered as the record. Only the last number will be shown. So one can easily know the total lines in the file. That is known to find and display the end of the line. So by using this command, we will be able to reach the end of the file and to count the line number of the content.

See man wc for more options. You can also output the entire file with line numbers in front of every line using the command below:. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more.

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