How to check how many lines a file has in Linux

Use the wc command. You can check it through wc --help.

For example:

wc -l filename

is to check how many lines there are in the file

wc -w filename

to see how many words there are in the file.

wc -L filename

How many words are there in the longest line in the file.

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wc command

The function of the wc command is to count the specified files The number of bytes, words, and lines in the file, and the statistical results are displayed and output.

Syntax: wc [options] file...

Description: This command counts the number of bytes, words, and lines in the given file. If no filename is given, then standard input is read. wc also gives a total count of all specified files. Words are the largest string of characters separated by space characters.

The meaning of each option of this command is as follows:

- c counts the number of bytes.

- l Count the number of rows.

- w counts the number of words.

These options can be used in combination.

The order and number of output columns are not affected by the order and number of options.

Always display in the following order and with a maximum of one column per item.

Number of lines, number of words, number of bytes, file name

If there is no file name in the command line, the file name will not appear in the output.

For example:

$ wc - lcw file1 file2
4 33 file1
7 52 file2
1 11 85 total

Omit the option -lcw, and the execution result of the wc command is the same as above.

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