bower is not recognised as an internal or external

问题:

I have successfully installed nodejs, and express framework, however I downloaded bower via

npm install -g bower

which ran successfully.

However whenever I try to install something with bower I get the error message

bower is not recognised as an internal or external command

when I search my computer for bower or a bower.exe I cannot locate it.

回答1:

I am using Windows 7 as well and had this problem too.

After I took the steps outlined in Scott Marchant's answer, bower worked.

Find the location of your npm global binaries: npm config get prefix. This path may look something like C:\Users\username\AppData\Roaming\npm. Add the path from step 1 to your Path.

Open the Windows Control Panel, search for environment, then click on either edit environment variables for your account, or Edit the system environment variables`.

Find the variable named Path or PATH, or create one if it doesn't exist.

Paste the path from step 1 here (; delimited).

You may need to restart your command prompt window.

You should now be able to enter bower commands.

回答2:

I solved this issue using command

$ npm install -g bower

make sure -g exist in command.

I am using os Window10.

回答3:

Installing Bower Windows:

1. install Node.js (required)
2. npm install -g bower
3. add to the Path environment variable for your both Systems and Users like this:

;C:\Users\me\AppData\Roaming\npm\node_modules\bower\bin

4. Restart your machine
5. open command prompt anywhere and type bower to verify that it works. DONE.

回答4:

1. Open cmd

2. Check bower is installed successfully:

   bower version -v If bower version showed then go to step 3, else execute:

   npm install -g bower to install bower

3. Close and re-open cmd (to apply new environment variables)

4. using CD command to navigate to folder that has bower.json file then run

   bower install DONE.

回答5:

Sometimes even after Scott's steps do not resolve the problem. Open the command prompt in admin mode. This resolves the problem

回答6:

1. Press Window+R
   
2. %appdata% Press Enter Key
   
3. C:\Users\xyz\AppData\Roaming\npm
   
4. Double Click bower.cmd icon
   
5. Press Shift Right Mouse Click Then Selec Open Command Window Here
   
6. Paste bower install MDBootstrap
   

SCREENSHOT

回答7:

Check were your cmd prompt/bash is located when you have successfully commanded "npm install"

Look for the any of the following. -bower.cmd - windows command script -bower - file you can do a quick search in the directory.

if you find it, copy the path to the file. "I found mine in the directory where I successfully performed npm install" + node_modules.bin" - "D:\Work\notepadplusplus\htdocs\laravel-main\angulartest\public\fed\node_modules.bin"

Then do these

1. Open the Windows Control Panel
2. Go to Advance
3. Environment Variables
4. Click on either edit environment variables for your account, or Edit the system environment variables`.
5. Find the variable named Path or PATH, or create one if it doesn't exist.
6. Paste the path from your search earlier (; delimited and without any space).
7. restart your command prompt window or your bash window.

There is no specific path since we all have different structure of our directories. The only precise thing here is to find the bower.cmd location and that will be used to the Path to your windows environment.

回答8:

Although we have already good answers here, I will give an extra hint. Check if you have a .npmrc file inside the folder /Users/YOUR_USER/. When this problem happened to me, my .npmrc file had this content:

http_proxy=http://<LOGIN>:<PASSWORD>@<PROXY>:<PORT>
https_proxy=http://<LOGIN>:<PASSWORD>@<PROXY>:<PORT>
proxy=http://<LOGIN>:<PASSWORD>@<PROXY>:<PORT>/
https-proxy=http://<LOGIN>:<PASSWORD>@<PROXY>:<PORT>
prefix = "D:\\<SOME_DIR>\\nodejs"
cache = "D:\\<SOME_DIR>\\nodejs\\npm-cache"

Due to prefix and cache lines, the bower was being installed inside the folder specified in prefix.

SOLUTION: I deleted prefix and cache lines. The I installed bower again with the following command:

npm install -g bower

After that, my bower became global as expected.

回答9:

C:\Users\[username]\AppData\Roaming\npm;

should exist in PATH for both "User Variables" and "System Variables"

回答10:

I resolved the issue my changing access rights of node.js folder. I gave Read-Write access to the file and issue resolved. node.js file path: C:\Program Files\nodejs

回答11:

I just wanted to add update to windows 10 users, I found that typing bower into the search bar will return "run command" option. Execute that and it will then prompt if bower can submit info, return a y/n and you should be good to go.

回答12:

Add the directory of bower to the PATH environment variable. Avoid having any space between directories:

C:\Program Files\nodejs;C:\Users\W\AppData\Roaming\npm\node_modules\bower\bin;C:\Users\W\AppData\Roaming\npm

To me it helped to remove the user variable and write the PATH environment variable in the System variables.