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[readme] add section on bare `nvm install`

Justin Dhillon 2023-10-23 10:25:26 -07:00 committed by Jordan Harband
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@ -542,7 +542,7 @@ $ echo "node" > .nvmrc # to default to the latest version
[NB these examples assume a POSIX-compliant shell version of `echo`. If you use a Windows `cmd` development environment, eg the `.nvmrc` file is used to configure a remote Linux deployment, then keep in mind the `"`s will be copied leading to an invalid file. Remove them.]
Then when you run nvm:
Then when you run nvm use:
```sh
$ nvm use
@ -550,6 +550,19 @@ Found '/path/to/project/.nvmrc' with version <5.9>
Now using node v5.9.1 (npm v3.7.3)
```
Running nvm install will also switch over to the correct version, but if the correct node version isn't already installed, it will install it for you.
```sh
$ nvm install
Found '/path/to/project/.nvmrc' with version <5.9>
Downloading and installing node v5.9.1...
Downloading https://nodejs.org/dist/v5.9.1/node-v5.9.1-linux-x64.tar.xz...
#################################################################################### 100.0%
Computing checksum with sha256sum
Checksums matched!
Now using node v5.9.1 (npm v3.7.3)
```
`nvm use` et. al. will traverse directory structure upwards from the current directory looking for the `.nvmrc` file. In other words, running `nvm use` et. al. in any subdirectory of a directory with an `.nvmrc` will result in that `.nvmrc` being utilized.
The contents of a `.nvmrc` file **must** be the `<version>` (as described by `nvm --help`) followed by a newline. No trailing spaces are allowed, and the trailing newline is required.