linux - [Solved-5 Solutions] How to count lines in a document using Linux commands - ubuntu - red hat - debian - linux server - linux pc

How to count lines in a document using Linux commands ?

Use wc:

wc -l <filename>

This will output the number of lines in :

$ wc -l /dir/file.txt
3272485 /dir/file.txt

Or, to omit the from the result use wc -l < :

$ wc -l < /dir/file.txt
3272485

You can also pipe data to wc as well:

$ cat /dir/file.txt | wc -l
3272485
$ curl yahoo.com --silent | wc -l
63

To count all lines use:

$ wc -l file

To filter and count only lines with pattern use:

$ grep -w "pattern" -c file  

Or use -v to invert match:

$ grep -w "pattern" -c -v file 

wc -l <file.txt>

Or

command | wc -l

There are many ways. using wc is one.

wc -l file

Others include

awk 'END{print NR}' file

sed -n '$=' file (GNU sed)

grep -c ".*" file

The tool wc is the "word counter" in UNIX and UNIX-like operating systems, you can also use it to count lines in a file, by adding the -l option, so wc -l foo will count the number of lines in foo. You can also pipe output from a program like this: ls -l | wc -l, which will tell you how many files are in the current directory.