如何找出实际安装的凉亭包的版本？

Normally a bower.json file specifies some dependencies, but these are typically expressed so that they allow a range of versions of a bower package to be used (e.g. >=1.0, which means anything higher than version 1.0).

通常，bower.json文件指定了一些依赖关系，但通常表达这些依赖关系，以便它们允许使用一系列版本的bower包（例如> = 1.0，这意味着任何高于1.0的版本）。

I have an automated process which needs to find what version of a bower package is actually installed on this system right now.

我有一个自动化过程，需要立即找到该系统上实际安装的bower包的版本。

How can I find this out programmatically (just the version itself), ideally using standard Unix command line tools / the bower command?

如何以编程方式（仅版本本身）找到它，理想情况下使用标准的Unix命令行工具/ bower命令？

bower info <thepackagename> does not show this - it shows information about what is currently available from the bower repository (for example, even if I do bower info apackageIdonthaveinstalled it will still show a valid JSON structure containing a version number).

bower info 没有显示这一点 - 它显示了当前可用于bower存储库的信息（例如，即使我执行bower info apackageIdonthaveinstalled，它仍将显示包含版本号的有效JSON结构）。

cat bower_components/thepackagename/bower.json | node_modules/json/lib/json.js version works for some packages (assuming the npm package json is installed), but not all (e.g. jquery 2.2.0's bower package does not contain a bower.json).

cat bower_components / thepackagename / bower.json | node_modules / json / lib / json.js版本适用于某些软件包（假设安装了npm软件包json），但并非全部（例如jquery 2.2.0的bower软件包不包含bower.json）。

3 个解决方案

#1

Here's a grep command to do that: grep "version\"\:" bower_components/thepackagename/.bower.json

这是一个grep命令：grep“version \”\：“bower_components / thepackagename / .bower.json

Also, a command to see versions of all bower components for the project - this list can be a handy CI artefact: grep "version\"\:" bower_components/*/.bower.json

此外，还有一个命令可以查看项目所有bower组件的版本 - 这个列表可以是一个方便的CI artefact：grep“version \”\：“bower_components / * /。bower.json

#2

The best approach I've now found, which seems to work for every package I've come across so far, is:

我现在找到的最好的方法，似乎适用于我目前遇到的每个包，是：

cat bower_components/thepackagename/.bower.json | node_modules/json/lib/json.js version

cat bower_components / thepackagename / .bower.json | node_modules / json / lib / json.js版本

(note the extra . in .bower.json).

（注意.bower.json中的额外内容）。

It would appear that bower stores some metadata about the installed package in .bower.json, and that includes the installed version.

bower似乎会在.bower.json中存储有关已安装软件包的一些元数据，其中包括已安装的版本。

~~The best I've come up with so far is:~~

到目前为止，我想出的最好的是：

~~bower list | grep jquery | perl -pe 's/.*jquery#(.*?) .*$/$1/'~~

(if, for example, the package I was interested in was jquery).

（例如，如果我感兴趣的包是jquery）。

That's pretty ugly for a variety of reasons:

由于各种原因，这非常丑陋：

I have to repeat the package name (although this could probably be improved with a better Perl script which filters lines too, I'm just being lazy).

我必须重复包名称（虽然这可能会通过更好的Perl脚本来改进，它也会过滤行，我只是在懒惰）。
bower list gets information about all installed packages, not just the one I'm interested in - the rest of the information is discarded.

bower list获取有关所有已安装软件包的信息，而不仅仅是我感兴趣的软件包 - 其余信息将被丢弃。
bower list seems to require internet connectivity to check the registry, otherwise it fails.

凉亭列表似乎需要互联网连接来检查注册表，否则它会失败。

~~Would be interested to see if this could be improved upon, particularly the last point.~~

有兴趣看看是否可以改进，尤其是最后一点。

#3

Have you ever tried "bower list --json=0 --offline".

你有没有试过“凉亭列表--json = 0 --offline”。

It would list all bower packages info.

它将列出所有凉亭包信息。

#1