为什么dpkg -p packageName
某些包(例如adduser
)dash
显示其信息,而其他包(例如nodejs,git,firefox)却显示dpkg-query: package name is not available
?
答案1
这手动的解释一下 ;-) man dpkg-query
:
-p, --print-avail [package-name...]
Display details about packages, as found in
/var/lib/dpkg/available. If no package-name is specified, it will
display all package entries in the available database (since dpkg
1.19.1). When multiple package-name are listed, the requested
available entries are separated by an empty line, with the same
order as specified on the argument list.
Users of APT-based frontends should use `apt show package-name`
instead as the available file is only kept up-to-date when using
dselect.
最后一句话解释了这一点:使用apt show package-name
例子:
$ apt show firefox
Package: firefox
Version: 87.0+build3-0ubuntu4
Priority: optional
Section: web
Origin: Ubuntu
$ apt show git
Package: git
Version: 1:2.30.2-1ubuntu1
Priority: optional
Section: vcs
Origin: Ubuntu
ETC。