zsh cannot execute global npm packages

Today, I installed an npm package globally, no problem here.

Screen Shot 2017-03-11 at 2.01.37 PM.png

But, when I execute the package, there comes an error:

~  yo
zsh: command not found: yo

So, it means that the system doesn’t realize the path to my package. I confirm by using:

~/W/C/htnmaruko  echo $PATH

So that, we need to export the path to where my package is lying in.

Because I installed by -g parameter, so it is lying in global npm. In my case, it is being in ~/.npm-global.


1. Export your path in ~/.zshrc (in case of using zsh, otherwise using ~/.bashrc) by  print it to your ~/.zshrc or ~/.bashrc (in case of not using zsh) file:

~/.n/bin  printf "\nexport PATH=\"\$PATH\":%s\n" ~/.npm-global/bin >> ~/.zshrc

Or just editing with vi:

~  vi /Users/duchoang/.zshrc

2. Now, fire up the changes:

~  . ~/.zshrc

3. And finally, the problem gets solved, the result we have:

Screen Shot 2017-03-11 at 2.03.28 PM

Now we can get back to our work.


The git error: “gpg failed to sign the data”

Today, I need to commit some pieces of stuff to my GitHub repository, but somehow this error comes I don’t know.

It’s really painful.

error: gpg failed to sign the data
fatal: failed to write commit object

After some researches on Google, I know that Github has implemented something called GPG to sign and verify work from trusted collaborators, using public-secret key mechanism. (refer: https://help.github.com/articles/signing-commits-with-gpg/)

My below guide is used on MacOS. For other platforms, please refer this link for Windows and this link for Linux.

So, to solve the problem, I have to config gpg to be able to sign commits. Note that from now, I will use brew to manage my installations. To know more about brew, you could find so much information on Google or its homepage: https://brew.sh

1. We need pinentry to read passphrases and PIN numbers in a secure manner. (For more information: https://www.gnupg.org/related_software/pinentry/index.en.html)

~/W/G/TalentHub-solutions brew install pinentry-mac

2. We need gpg of course, I use gpg2

~/W/G/TalentHub-solutions ❯ brew install gpg2

3. Now we are ready to generate our secret key, I chose all by default.

~/W/G/TalentHub-solutions  gpg2 --gen-key

Screen Shot 2017-03-10 at 10.35.20 PM

4. Once you have a private key to sign with, you can configure Git to use it for signing things by setting the user.signingkey config setting.

4.1. Get your secret key:

~/W/G/TalentHub-solutions  gpg2 --list-secret-keys

You will see something like:

Screen Shot 2017-03-10 at 10.40.35 PM

Then, B069A034 is your secret key.

4.2. Config your signing key:

~/W/G/TalentHub-solutions  git config --global user.signingkey B069A034
~/W/G/TalentHub-solutions  git config --global gpg.program $(which gpg2)
~/W/G/TalentHub-solutions  git config --global commit.gpgsign true
~/W/G/TalentHub-solutions ❯❯❯ echo "no-tty" >> ~/.gnupg/gpg.conf

5. Point out the pinentry program to gpg-agent.conf:

~/W/G/TalentHub-solutions  touch  ~/.gnupg/gpg-agent.conf
~/W/G/TalentHub-solutions  echo "pinentry-program /usr/local/bin/pinentry-mac" >> ~/.gnupg/gpg-agent.conf

Now you will be able to commit to your git repository.