Xtykutl

I'm trying to write a little shell script to install nvm and then to install a node version specified in the .nvmrc file. The installation of nvm seems to be succesful, but I can not call nvm install, because $(command -v nvm) has no output. Also in the terminal, I get the message from the nvm install.sh script:

=> Close and reopen your terminal to start using nvm or run the following to use it now:

#!/bin/bash



if ! [ -x "$(command -v nvm)" ]; then

  echo 'Installing Node version manager (http://nvm.sh).' >&2

  curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash

fi



source ~/.bash_profile

source ~/.bashrc



if [ -x "$(command -v nvm)" ]; then

  nvm install

  exit 0

fi

exit 1

How to use the command nvm in the bash script?

If you want to simply modify the environment with the command given by the script without reloading the whole profile use :

eval "$(curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash | grep -E -v "^.?=>")"

grep will remove the comments starting with => and potentially a leading hidden character.
eval will execute the commands in the current shell.

then do not use -x since command -v nvm returns nvm and not the full path.
if [ -n "$(command -v nvm)" ]; then
nvm install
exit $?
fi

And following triplee advice use a bare exit to keep the return code.

Script becomes:

#!/bin/bash



if ! [ -x "$(command -v nvm)" ]; then

  echo 'Installing Node version manager (http://nvm.sh).' >&2

  eval "$(curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash | grep -E -v "^.?=>")"

fi



if [ -n "$(command -v nvm)" ]; then

  nvm install

  exit

fi

exit 1