如何检查软件包是否已安装,如果没有安装,该如何安装? [英] How to check if package installed and install it if not?
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问题描述
我正在Ubuntu系统上工作,目前这是我正在做的事情:
I'm working on a Ubuntu system and currently this is what I'm doing:
if ! which command > /dev/null; then
echo -e "Command not found! Install? (y/n) \c"
read
if "$REPLY" = "y"; then
sudo apt-get install command
fi
fi
这是大多数人会做的吗?还是有一个更优雅的解决方案?
Is this what most people would do? Or is there a more elegant solution?
推荐答案
要检查是否已安装 packagename
,请输入:
To check if packagename
was installed, type:
dpkg -s <packagename>
您还可以使用 dpkg-query
,该输出具有更整洁的输出,并且可以接受通配符.
You can also use dpkg-query
that has a neater output for your purpose, and accepts wild cards, too.
dpkg-query -l <packagename>
要查找什么包拥有 command
,请尝试:
To find what package owns the command
, try:
dpkg -S `which <command>`
有关更多详细信息,请参见文章 dpkg速查表.
For further details, see article Find out if package is installed in Linux and dpkg cheat sheet.
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