Asked  7 Months ago    Answers:  5   Viewed   38 times

I'm trying to get a list of the names of all the files present in a directory using Node.js. I want output that is an array of filenames. How can I do this?

 Answers

27

You can use the fs.readdir or fs.readdirSync methods. fs is included in Node.js core, so there's no need to install anything.

fs.readdir

const testFolder = './tests/';
const fs = require('fs');

fs.readdir(testFolder, (err, files) => {
  files.forEach(file => {
    console.log(file);
  });
});

fs.readdirSync

const testFolder = './tests/';
const fs = require('fs');

fs.readdirSync(testFolder).forEach(file => {
  console.log(file);
});

The difference between the two methods, is that the first one is asynchronous, so you have to provide a callback function that will be executed when the read process ends.

The second is synchronous, it will return the file name array, but it will stop any further execution of your code until the read process ends.

Tuesday, June 1, 2021
 
conmen
answered 7 Months ago
74

You need to manually create a symlink /usr/bin/node. Shortcut for bash compatible shells:

sudo ln -s `which nodejs` /usr/bin/node

Or if you use non-standard shells, just hardcode the path you find with which nodejs:

sudo ln -s /usr/bin/nodejs /usr/bin/node

Later edit

I found this explanation in the link you posted

There is a naming conflict with the node package (Amateur Packet Radio Node Program), and the nodejs binary has been renamed from node to nodejs. You'll need to symlink /usr/bin/node to /usr/bin/nodejs or you could uninstall the Amateur Packet Radio Node Program to avoid that conflict.

Later later edit

It's been a while since I answered this. Although the solution I posted up here worked for me several times, users have reported a few more solutions within the comments:

From @user229115

sudo update-alternatives --install /usr/bin/node node /usr/bin/nodejs 10

From AskUbuntu (user leftium)

sudo apt-get --purge remove node
sudo apt-get --purge remove nodejs
sudo apt-get install nodejs
Tuesday, June 1, 2021
 
WooDzu
answered 7 Months ago
35

The hint (using axfr) only works if the NS you're querying (ns1.foo.bar in your example) is configured to allow AXFR requests from the IP you're using; this is unlikely, unless your IP is configured as a secondary for the domain in question.

Basically, there's no easy way to do it if you're not allowed to use axfr. This is intentional, so the only way around it would be via brute force (i.e. dig a.some_domain.com, dig b.some_domain.com, ...), which I can't recommend, as it could be viewed as a denial of service attack.

Sunday, June 20, 2021
 
wavyGravy
answered 6 Months ago
37
$ ls -a
./ ../ .foo/ bar/ baz qux*
$ shopt -s dotglob
$ shopt -s nullglob
$ array=(*/)
$ for dir in "${array[@]}"; do echo "$dir"; done
.foo/
bar/
$ for dir in */; do echo "$dir"; done
.foo/
bar/
$ PS3="which dir do you want? "
$ echo "There are ${#array[@]} dirs in the current path"; 
select dir in "${array[@]}"; do echo "you selected ${dir}"'!'; break; done
There are 2 dirs in the current path
1) .foo/
2) bar/
which dir do you want? 2
you selected bar/!
Saturday, July 17, 2021
 
van_folmert
answered 5 Months ago
95

The option is short for current working directory, and is spelled cwd, not cdw.

var exec = require('child_process').exec;
exec('pwd', {
  cwd: '/home/user/directory'
}, function(error, stdout, stderr) {
  // work with result
});
Sunday, August 1, 2021
 
Aleks
answered 5 Months ago
Only authorized users can answer the question. Please sign in first, or register a free account.
Not the answer you're looking for? Browse other questions tagged :  
Share