commit 57623fa678629c26ba31da9b2f49b605b54f355b
Author: テクニカル諏訪子 <renraku@076.ne.jp>
Date:   Thu Nov 17 15:07:45 2022 +0900

    最初コミット

diff --git a/.local/bin/getsystem b/.local/bin/getsystem
new file mode 100755
index 0000000..b3d20c5
--- /dev/null
+++ b/.local/bin/getsystem
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+ostype='unknown'
+platform='unknown'
+unamestr=$(uname)
+
+if [ "$unamestr" = 'Linux' ]; then
+  ostype='linux'
+  platform=$(cat /etc/os-release | grep "^ID=" | sed -e "s/ID=//")
+elif [ "$unamestr" = 'FreeBSD' ]; then
+  ostype='bsd'
+  platform='freebsd'
+elif [ "$unamestr" = 'OpenBSD' ]; then
+  ostype='bsd'
+  platform='openbsd'
+fi
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..bd81c16
--- /dev/null
+++ b/README.md
@@ -0,0 +1,93 @@
+# OS発見スクリプト
+
+このスクリプトで簡単にOS類とディストリビューション（Linuxの場合）を発見出来ます。
+
+## 対応OS
+
+* Arch Linux
+* Artix Linux
+* Debian GNU/Linux
+* Devuan GNU+Linux
+* FreeBSD
+* Manjaro
+* OpenBSD
+* Ubuntu
+* Void Linux
+
+## インストールする方法
+
+### ZSHの場合
+
+```sh
+chmod +x ~/.local/bin/getsystem
+nvim ~/.zshrc
+```
+
+```
+...
+. ~/.local/bin/getsystem
+...
+```
+
+### BASHの場合
+
+```sh
+chmod +x ~/.local/bin/getsystem
+nvim ~/.bashrc
+```
+
+```
+...
+source ~/.local/bin/getsystem
+...
+```
+
+## 例えば
+
+```sh
+if [ "$platform" = 'freebsd' ]; then
+  echo "FreeBSDでメモリーの確認"
+  dmesg | grep memory
+elif [ "$platform" = 'openbsd' ]; then
+  echo "OpenBSDでメモリーの確認"
+  dmesg | grep mem
+else
+  echo "Linuxでメモリーの確認"
+  free -m
+fi
+```
+
+```sh
+echo "使っているOSは："
+if [ "$ostype" = 'linux' ]; then
+  echo "Linux"
+elif [ "$ostype" = 'bsd' ]; then
+  echo "BSD"
+else
+  echo "わからないなぁ…確かに良いOSではないよね"
+fi
+```
+
+```sh
+if [ "$platform" = 'artix' ] || [ "$platform" = 'arch' ] || [ "$platform" = 'manjaro' ]; then
+  sudo pacman -Syyu
+elif [ "$platform" = 'devuan' ] || [ "$platform" = 'debian' ] || [ "$platform" = 'ubuntu' ]; then
+  sudo apt update && sudo apt upgrade && sudo apt autoremove
+elif [ "$platform" = 'void' ]; then
+  sudo xbps-install -Su
+elif [ "$platform" = 'freebsd' ]; then
+  sudo pkg update && sudo pkg upgrade
+elif [ "$platform" = 'openbsd' ]; then
+  doas pkg_add -ui
+else
+  echo "エラー"
+fi
+```
+
+```sh
+# source ~/.local/bin/getsystem
+# echo $ostype
+linux
+# echo $platform
+artix
+```