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Node Version Manager (NVM) を利用した Node.js インストール手順

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GitHub - nvm-sh/nvm: Node Version Manager - POSIX-compliant bash script to manage multiple active node.js versions

環境

2021-05-31 時点で最新の CentOS 8 Stream を利用した。

$ cat /etc/os-release
NAME="CentOS Stream"
VERSION="8"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Stream 8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://centos.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 8"
REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream"
$ uname -a
Linux localhost.localdomain 4.18.0-305.0.1.el8.x86_64 #1 SMP Fri May 28 11:04:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

手順

GitHub の README に記載の通りで OK.

  1. インストールスクリプトをダウンロード & 実行する。

    $ curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash
      % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                     Dload  Upload   Total   Spent    Left  Speed
    100 14926  100 14926    0     0  46937      0 --:--:-- --:--:-- --:--:-- 46937
    => Downloading nvm as script to '/home/vagrant/.nvm'
    
    => nvm source string already in /home/vagrant/.bashrc
    => bash_completion source string already in /home/vagrant/.bashrc
    => Close and reopen your terminal to start using nvm or run the following to use it now:
    
    export NVM_DIR="$HOME/.nvm"
    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
    [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
    

    ~/.nvm ディレクトリーに格納される。

    $ ls -lA ~/.nvm
    total 140
    -rw-rw-r--. 1 vagrant vagrant   2201 May 31 07:08 bash_completion
    -rwxrwxr-x. 1 vagrant vagrant    344 May 31 07:08 nvm-exec
    -rw-rw-r--. 1 vagrant vagrant 134284 May 31 07:08 nvm.sh
    

    ~/.bashrc にも追記される。

    $ tail ~/.bashrc
    export PATH
    
    # Uncomment the following line if you don't like systemctl's auto-paging feature:
    # export SYSTEMD_PAGER=
    
    # User specific aliases and functions
    
    export NVM_DIR="$HOME/.nvm"
    [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"  # This loads nvm
    [ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
    
  2. 再ログインする。

    正体は関数。

    $ which nvm | head
    nvm ()
    {
        if [ $# -lt 1 ]; then
            nvm --help;
            return;
        fi;
        local DEFAULT_IFS;
        DEFAULT_IFS=" $(nvm_echo t | command tr t \\t)
    ";
        if [ "${-#*e}" != "$-" ]; then
    

    ダウンロードした際のバージョンが出力される。

    $ nvm --version
    0.38.0
    

    ヘルプも確認できる。

    $ nvm --help | head
    
    Node Version Manager (v0.38.0)
    
    Note: <version> refers to any version-like string nvm understands. This includes:
      - full or partial version numbers, starting with an optional "v" (0.10, v0.1.2, v1)
      - default (built-in) aliases: node, stable, unstable, iojs, system
      - custom aliases you define with `nvm alias foo`
    
     Any options that produce colorized output should respect the `--no-colors` option.
    
  3. 長期サポートバージョンの Node.js をインストールする。

    $ nvm install --lts
    Installing latest LTS version.
    Downloading and installing node v14.17.0...
    Downloading https://nodejs.org/dist/v14.17.0/node-v14.17.0-linux-x64.tar.xz...
    ######################################################################### 100.0%
    Computing checksum with sha256sum
    Checksums matched!
    Now using node v14.17.0 (npm v6.14.13)
    Creating default alias: default -> lts/* (-> v14.17.0)
    

    ~/.nvm ディレクトリー以下にインストールされる。

    $ which node npm npx
    ~/.nvm/versions/node/v14.17.0/bin/node
    ~/.nvm/versions/node/v14.17.0/bin/npm
    ~/.nvm/versions/node/v14.17.0/bin/npx
    

    再ログイン不要で PATH も問題なく, バージョンを確認できる。

    $ node --version
    v14.17.0
    

    npm や npx も同様。

    $ npm --version
    6.14.13
    
    $ npx --version
    6.14.13
    

どっとはらい。

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