Installing gulp-sass throwing error - node.js

This question seems to be repeated of this link but I cannot figure out how to map a drive letter or share network. I am really sorry for repeating but I need help.
I have a command prompt with default directory pointing to my www folder of wamp server.
D:\wamp\www\
I have install other gulp plugin such as gulp-minify. It works fine without any error. But when I try to install gulp-sass it throws error
It happens to me most of the time like, I have been trying to install plugin such as optipng. It shows same error. Seems like it is searching for a "script" folder inside www which is not there. But the script folder is inside the c drive where the nodejs folder exist. Below is the exact path.
C:\Program Files\nodejs\node_modules\npm\scripts
I don't understand why it is searching in my working directory ?
D:\wamp\www\scripts\install.js

The only problem was with the autorun to set the path of command prompt. Few years back I had set the path of my command prompt to D:\wamp\www\ from registry HKEY_CURRENT_USER\Software\Microsoft\Command Processor
You can access the registry by typing "regedit" in run dialog box (window + r)
i just deleted the autorun file and it started working normally.
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Node.Js windows command prompt change C:\ path to test directory instead

I'm trying to figure out if there is a way to change the Node.Js command prompt default path = C:\users...> (default when the prompt is launched) or C:\Windows\System (if launched with administrator privileges), to the location of the folder where i'm working.
Normally I have been doing C:\users..> cd C:\xampp\htdocs..... to navigate to the test folder and run test. Although once the command prompt is closed it reverts back to C:\users...>.
To achieve what I want I came across using Z:>C:\xampp\htdocs\projects.... but this returns access denied with or without administrator privileges. Even if I try C:>C:\xampp\htdocs\projects.... still get the Access Denied for some unknown reason. To be honest I don't know what Z:> or C:> will result.
Is it possible to change the default prompt path to the path of the directory I am working in so that every time command prompt is launched it goes to that directory? In this case C:\xampp\htdocs\projects.... instead of C:\users...>
This seems like a general windows CMD question. Simply change the start up directory for CMD. See this SO post.
Once you're in that directory, you should be able to run the node command as normal.
Look inside your default nodejs installation folder for a file called nodevars.bat. Here is my path:
C:\Program Files\nodejs\nodevars.bat
Open this and look towards the bottom--the line I needed was on the very bottom. Here is the line from the git master:
if "%CD%\"=="%~dp0" cd /d "%HOMEDRIVE%%HOMEPATH%"
I changed mine to
if "%CD%\"=="%~dp0" cd /d "C:\Users\David\Desktop\work\J\math"
And now I am happier.
I had the same question, today, 4/11/22, and DuckDuckGo provided this as the number one result for my query. Since the question appears to be unanswered, I will try for those who might show up later.

Command prompt not recognizing MongoDB even when added to environment PATH

I am new to the MEAN stack and am trying to implement a tutorial here:https://scotch.io/tutorials/build-a-restful-api-using-node-and-express-4
I am simply trying to install packages I need which are both node.js, express,js, and MongoDB.
My steps after trying to troubleshoot:
I have installed MongoDB 3.2.1 from their site onto my local machine and it is stored at path C:\Program
Files\MongoDB\Server\3.2\bin\
(I can navigate to C:\Program Files\MongoDB\Server\3.2\bin in my
command prompt window and type mongo and have it run)
I went to Control Panel -> System Settings -> Security -> Advanced -> Environment Varaibles -> and under system varialbles:
Earlier I had to add a path for node.js (C:\Program Files\nodejs works
fine for running node at any directory level)
So I tried adding a system variable: MongoDB at "C:\Program
Files\MongoDB\Server\3.2\bin\mongo"
So the ultimate goal is for me to be able to navigate to a folder strucutre on my desktop and run:
"node --version"
"express --version"
"mongo --version"
and have them all be properly installed and available so that I can move on to my application creation.
Any help would be appreciated, thanks.
The command line works by looking in all of the directories specified by the PATH environment variable.
From what I can see, you've included the name of the executable (mongo) in the PATH, when you just need to include the directory.
Just for completeness, on my PC, the PATH variable looks something like this:
C:\Program Files (x86)\Python35-32\Scripts\;C:\Program Files\apache-maven-3.3.9\bin;C:\Program Files\MongoDB\Server\3.2\bin
Basically path variable in a system stores the paths to executable files and programs.
1 System.
2 Advanced system settings.
3 Environment Variables.
4 Double click on 'path' in your User tab.
5 click 'New'.
6 Then add your mongo bin location.
ex:- my one --> C:\Program Files\MongoDB\Server\3.6\bin.
7 Click OK.
Then try in cmd again for the result
I had the same problem when I did the installation on ParrotOS, when I wanted to run the Mongo shell on the terminal with the command mongo it prompted me that the the command wasn't recognize. Same problem with Windows after I edited the variable path.
The command mongod ran for me the shell in both OS without problems. It could be something that was added with new versions of MongoDB.
If someone else knows more about what this happens, ill be more than happy to know.

Installing Node.js (and npm) on Windows 10

I had some issues trying to install Node on Windows 10 and found the solution.
The error was as follows:
C:\Users\Stephan>npm
Error: ENOENT, stat 'C:\Users\Stephan\AppData\Roaming\npm'
The solution is below.
Edit:
It seems like new installers do not have this problem anymore, see this answer by Parag Meshram as my answer is likely obsolete now.
Original answer:
Follow these steps, closely:
http://nodejs.org/download/ download the 64 bits version, 32 is for hipsters
Install it anywhere you want, by default: C:\Program Files\nodejs
Control Panel -> System -> Advanced system settings -> Environment Variables
Select PATH and choose to edit it.
If the PATH variable is empty, change it to this: C:\Users\{YOUR USERNAME HERE}\AppData\Roaming\npm;C:\Program Files\nodejs
If the PATH variable already contains C:\Users\{YOUR USERNAME HERE}\AppData\Roaming\npm, append the following right after: ;C:\Program Files\nodejs
If the PATH variable contains information, but nothing regarding npm, append this to the end of the PATH: ;C:\Users\{YOUR USERNAME HERE}\AppData\Roaming\npm;C:\Program Files\nodejs
Now that the PATH variable is set correctly, you will still encounter errors. Manually go into the AppData directory and you will find that there is no npm directory inside Roaming. Manually create this directory.
Re-start the command prompt and npm will now work.
go to http://nodejs.org/
and hit the button that says "Download For ..."
This'll download the .msi (or .pkg for mac) which will do all the installation and paths for you, unlike the selected answer.
In addition to the answer from #StephanBijzitter I would use the following PATH variables instead:
%appdata%\npm
%ProgramFiles%\nodejs
So your new PATH would look like:
[existing stuff];%appdata%\npm;%ProgramFiles%\nodejs
This has the advantage of neiter being user dependent nor 32/64bit dependent.
New installers (.msi downloaded from https://nodejs.org) have "Add to PATH" option. By default it is selected. Make sure that you leave it checked.
Everything should be installed in %appdata% (C:\Users\\AppData\Roaming), not 'program files'.
Here's why...
The default MSI installer puts Node and the NPM that comes with it in 'program files' and adds this to the system path, but it sets the user path for NPM to %appdata% (c:\users[username]\appdata\roaming) since the user doesn't have sufficient priveleges to write to 'program files'.
This creates a mess as all modules go into %appdata%, and when you upgrade NPM itself - which NPM themselves recommend you do right away - you end up with two copies: the original still in 'program files' since NPM can't erase that, and the new one inn %appdata%.
Even worse, if you mistakenly perform NPM operations as admin (much easier on Windows then on *nix) then it will operate on the 'program files' copy of NPM node_modules. Potentially a real mess.
So, when you run the installer simply point it to %appdata% and avoid all this.
And note that this isn't anything wierd - it’s what would happen if you ran the installer with just user priveleges.
You should run the installer as administrator.
Run the command prompt as administrator
cd directory where msi file is present
launch msi file by typing the name in the command prompt
You should be happy to see all node commands work from new command prompt shell
I had the same problem, what helped we was turning of my anti virus protection for like 10 minutes while node installed and it worked like a charm.
The reason why you have to modify the AppData could be:
Node.js couldn't handle path longer then 256 characters, windows tend to have very long PATH.
If you are login from a corporate environment, your AppData might be on the server - that won't work. The npm directory must be in your local drive.
Even after doing that, the latest LTE (4.4.4) still have problem with Windows 10, it worked for a little while then whenever I try to:
$ npm install _some_package_ --global
Node throw the "FATAL ERROR CALL_AND_RETRY_LAST Allocation failed - process out of memory" error. Still try to find a solution to that problem.
The only thing I find works is to run Vagrant or Virtual box, then run the Linux command line (must matching the path) which is quite a messy solution.
For me I had to delete the nodejs folder in \program files and then when I went to install through the msi it worked. Seemed like when I uninstalled Node it didnt actually delete this file
I had the same problem, but after trying everything on this post unsuccessfully, I just had to restart.
So if you haven't tried restarting the computer after the installation, try it.
Restart your computer after installation

Showing error "nvmw command not found" when setting the path of nvmw in Nodejs

I am new in Nodejs. I want to install nvmw in my system. For that first I clone the respiratory using this command
git clone git://github.com/hakobera/nvmw.git "%HOMEDRIVE%%HOMEPATH%\.nvmw"
after that for activating nvmw, I used this command
set "PATH=%HOMEDRIVE%%HOMEPATH%\.nvmw;%PATH%"
in E drive.Folder is also created in E drive in name of %HOMEDRIVE%%HOMEPATH% and inside the folder all the datas and nvmw folder also created.
But after that when I am running this command nvmw help, it shows "nvmw command not found". I tried by changing the folder name also but it shows the same error. I think I am doing some mistake in setting the path.
In my case, that command is not working on Windows PowerShell.
The command for setting System Path should be run Windows Command Prompt.
In the other hands, you can add installed path with GUI.
For Windows PowerShell, see following question:
Setting Windows PowerShell path variable

Grunt on Windows 8: 'grunt' is not recognized

I'm having a problem running Grunt from the command line on my Windows 8 machine.
My research indicates the most common solution is to install grunt-cli, since Grunt is no longer global. I also need to make sure I actually install the Grunt task runner, since that's not installed with grunt-cli.
Other solutions point to the PATH system environment variable, but that appears to be pointed as I'd expect to:
C:\Users[username]\AppData\Roaming\npm
Having done all that, I'm still getting a "'grunt' is not recognized as an internal or external command, operable program or batch file" error message in the CLI. I've tried the following things, uninstalling everything after every attempt:
Installed grunt-cli globally (npm install -g grunt-cli), then grunt at the directory level I want to use it (npm install grunt)
The same as above, but with the order of installation reversed
The same as both of the above, but using the Admin Command Prompt
Am I missing something obvious?
I've not had any issues with grunt on several different windows 8 machines.
If you open the folder: C:\Users\[username]\AppData\Roaming\npm
Do you have a file named grunt.cmd in this folder?
If not I'd maybe try npm install -g grunt-cli again, maybe from an elevated command prompt.
If this exists and you have C:\Users\[username]\AppData\Roaming\npm in your PATH environment variable then typing grunt from a command prompt should work.
Silly question, have you tried closing the command prompt and opening a new one?
Confirm your PATH is correct (and not messed up). Just type PATH from the command prompt. There's really no other explanation that makes sense given the error you're describing and the steps you've taken.
Normally, using the where grunt command would have found grunt.cmd in your path if npm is installed correctly and it has been properly added to the system path.
Close all Command Prompt instances.
Start a new Command Prompt instance.
Type PATH Enter and verify if C:\Users\Username\AppData\Roaming\npm is part of the path.
If not, you need to log off and on again,or close the Command Prompt and restart the explorer process.
In the Command Prompt, type where grunt Enter.
You're good if it reports:
C:\Users\Username\AppData\Roaming\npm\grunt
C:\Users\Username\AppData\Roaming\npm\grunt.cmd
Otherwise, you have to reinstall the grunt-cli package if it reports:
INFO: Could not find files for the given pattern(s).
Apparently, programs that change the PATH environment variable must broadcast a WM_SETTINGCHANGE message. The Windows' System settings window does it correctly when you change the PATH variable, but the NPM installer doesn't. That's why you have to restart explorer (or log off or restart, which has the same effect).
I know this has been answered but I thought I'd offer my step by step solution for windows 8.
First thing I checked was the PATH in my laptops Environment Variables (Right click my computer > properties > advanced system settings > Environment Variables)
It wasn't listed in there so I added a new variable in User variables (so it was specific only to my user account)
In the new user variable prompt I entered the following;
Variable Name: PATH
Variable Value: %USERPROFILE%\AppData\Roaming\npm
Quit command prompt, repoened, navigated to my projects directory and tried running grunt again and... SUCCESS!
I had the same issue.
I tried different things:
Restart computer
Deleted the grunt folder and ran
npm install -g grunt -cli
Didn't work.
Finally tried:
npm install -g grunt-cli
Worked perfectly.
Tried
where grunt
and I saw 2 locations where it was found.
I was facing the same problem on windows 8
I have added ' %APPDATA%\npm ' to the path variable . It has been working fine.
some times NPM install corrupts the basic windows path. i usually have a copy of my own version of PATH mainted separately. every week or on some installs i manually configure and update the %PATH% variable.
Basically Grunt.cmd is not availbe through %PATH% variable.
I have stucked with problem on Windows 8, that after install grunt-cli I've always got "command not found" while I'm tried to check grunt -v or where grunt. So I've added to enviroment PATH this path C:\Program Files (x86)\Git\local and run grunt.cmd from that folder (you need to look in node_modules folder here). And after reloading my terminal everything started to work.
Same happened to me and here was the solution:
Have you got 2 different versions of Node.JS installed?
Maybe Nodist?
This means you likely got NPM installed twice which will install the commands into 2 different folders:
Once into C:\Users\<user>\AppData\Roaming\npm and once into C:\dev\nodist\bin\bin.
C:\dev\nodist\bin\bin wasn't on my path variable so I added it, and I removed the Node.JS version I didn't want to use.
If you have no grunt.cmd file created by npm, make sure that you do not have a .npmrc in your home directory with: bin-links=false in it.
After getting a tonne of "'grunt' is not recognized as an internal or external command," errors, I solved this on Windows 10 by going to Path and adding C:\Users\Username\AppData\Roaming\npm

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