linux - How to only get the number of lines of a file -


how number of lines of file in linux?

i want number of lines, not filename.
want in single command, without grep or utility.

wc -l sample.txt

output

5 sample.txt

desired output 

5

try this

wc -l < sample.txt

wc doesn't print out filename if reads file through standard input. < feeds file via standard input.


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