从 Bash 脚本检测操作系统并通知用户
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Detect OS from Bash script and notify user
提问by Graham
Using bash, I want to find the operating system and notify the user. I tried:
使用 bash，我想找到操作系统并通知用户。我试过：
OS='uname -s'
echo "$OS"
if [ "$OS" == 'Linux' ]; then
echo "Linux"
else
echo "Not Linux"
fi
I just get
我只是得到
uname -s
Not Linux
on the terminal, which is wrong. How do I correctly set the string to what uname returns?
在终端上，这是错误的。如何将字符串正确设置为 uname 返回的内容？
Thanks
谢谢
回答by William Pursell
Rather than single quotes, you probably meant to use backticks:
您可能打算使用反引号而不是单引号：
OS=`uname -s`
but you really want
但你真的想要
OS=$(uname -s)
Also, rather than an if statment, which will eventually become an if/else series, you might consider using case:
此外，您可以考虑使用 case，而不是最终将成为 if/else 系列的 if 语句：
case $( uname -s ) in
Linux) echo Linux;;
*) echo other;;
esac
回答by robertmoggach
This will return the OS as requested - note that unameis not necessarily available on all OSes so it's not part of this answer.
这将根据要求返回操作系统 - 请注意，uname它不一定在所有操作系统上都可用，因此它不是此答案的一部分。
case "$OSTYPE" in
linux*) echo "linux" ;;
darwin*) echo "mac" ;;
msys*) echo "windows" ;;
solaris*) echo "solaris" ;;
bsd*) echo "bsd" ;;
*) echo "unknown" ;;
esac
