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Cover image for How to count lines of your code from your SHELL.
darker
darker

Posted on • Updated on

How to count lines of your code from your SHELL.

So, this one is quite simple, let say, you want to count the lines of code you have inside a project, from a file or a whole directory, how are you going to do it ?

Demo

HOW

This is done with a simple bash function

loc(){
    echo -ne "Lines of Code : ";
    if [ -n "$1" ]; then
        find . -wholename $1 | xargs wc -l;
    else
        find . -name '*' -type f | xargs cat | wc -l;
    fi
}
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Basically, it will find files depending on your input and use wc to count lines of your code.

You can then add this in your ~/.bashrc and source before use it or save it in separate shell file that you can call and use when you want !

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Top comments (8)

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ccoveille profile image
Christophe Colombier • Edited on

Hi darker

Few suggestion s:

find . -wholename $1 | xargs wc -l;

wc -l $1
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That's it.

Even if this would be better if the file starts with a "-", such as "-whatever"

wc -l -- $1
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You can test with such a file

echo "whatever\nok" > "-strangefile"
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Also,

find . -name '*' -type f | xargs cat | wc -l;

I assume you wanted to exclude all hidden folders.

If not, then

find -type f | xargs cat | wc -l;
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would have been enough.

But here is what I would write, assuming you want to exclude all hidden files from current folder.

find * -type f | xargs cat | wc -l;
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But here is what I would write

find * -type f -print0 | xargs -r -0 cat | wc -l
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-print0 to be able to cope with files with spaces in it, then -0 to accept them as xargs parameters

Just create a file with space to see the problem with your script

echo "whatever\nok" > "file with spaces"
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Then the -r is about to tell xargs to do not lamentably fail if nothing is found.

Such as creating a folder, go in that folder with cd, then launch your script. It may work, I'm on my phone for days, no computer close to me. But xargs without -r is anti pattern for me.

Same as find | xargs without the -print0 and -0

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ccoveille profile image
Christophe Colombier

I'm wrong with

wc -l $1
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Your code was ok with folder while mine doesn't.

So here is what I would suggest:

find "$@" -type f -print0 | xargs -r -0 cat | wc -l
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No if branching needed.

$@ allows you to pass any parameters

So you can pass a folder and two files to your script for example

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sanixdarker profile image
darker Author

NIIIICE !
Thanks for the feedback, i will update that !

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ccoveille profile image
Christophe Colombier

Test first, I'm not in front of a computer πŸ˜…

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sanixdarker profile image
darker Author

Haha !
Don't worry, i just tested it and it's working !

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ccoveille profile image
Christophe Colombier

21 years of Linux experience after all πŸ˜…

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sanixdarker profile image
darker Author

yeah, you rock man !

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ccoveille profile image
Christophe Colombier

Your implementation is good proof of concept, but there are commonly accepted implementations

github.com/AlDanial/cloc

dwheeler.com/sloccount/

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