如何从 cocoapods 缓存中删除或清除特定的 pod？

尝试直接删除整个缓存，需要很长时间才能恢复所有 Pod。如何从缓存中查看和删除特定的 Pod？

以下作品（较长时间提交）：

# delete all cached pods
`rm -rf "${HOME}/Library/Caches/CocoaPods"`  

# delete local Pods/*
rm -rf "`pwd`/Pods/"

# pod update to fetch latest. After entire cache deletion, it takes lot longer to fetch and rebuild pod cache from scratch. 
`pod update` 

只是从 podfile 中注释掉，并且pod install再次从缓存中获取旧版本。

当 Pod 很大时，Pod 缓存中存在多个相同 Pod 的实例可能会很麻烦，在正在使用的项目中，当前使用的 Pod 之一的大小 > 1.5 GBcocoapods1.3.1 with Xcode9.

清除特定 Pod

pod cache clean --all # will clean all pods
pod cache clean 'FortifySec' --all # will remove all installed 'FortifySec' pods 

样本输出pod cache clean 'FortifySec'，对于不使用语义版本控制的 pod，这可能会导致缓存中存在同一 pod 的许多副本：

pod cache clean 'FortifySec'
1: FortifySec v2.2 (External)
2: FortifySec v2.2 (External)
...
...
18: FortifySec v2.2 (External)
19: FortifySec v2.2 (External)

Which pod cache do you want to remove?

完成清理（pod重置）

rm -rf ~/Library/Caches/CocoaPods
rm -rf Pods
rm -rf ~/Library/Developer/Xcode/DerivedData/*
pod deintegrate
pod setup
pod install

的例子pod cache list清洁前

pod cache list

FortifySec:
- Version: 2.2.1
Type:    External
Spec:    /Users/j.d/Library/Caches/CocoaPods/Pods/Specs/External/FortifySec/ui99sd....podspec.json
Pod:     /Users/j.d/Library/Caches/CocoaPods/Pods/External/FortifySec/yi23sd...-sdjc3
- Version: 2.2.1
Type:    External
Spec:    /Users/j.d/Library/Caches/CocoaPods/Pods/Specs/External/FortifySec/dsfs-df23
Pod:     /Users/j.d/Library/Caches/CocoaPods/Pods/External/FortifySec/dfs0d-2dfs
- Version: 2.2
Type:    External
Spec:    /Users/j.d/Library/Caches/CocoaPods/Pods/Specs/External/FortifySec/u78hyt....podspec.json
Pod:     /Users/j.d/Library/Caches/CocoaPods/Pods/External/FortifySec/e000sd
- Version: 2.2.2
Type:    External
Spec:    /Users/j.d/Library/Caches/CocoaPods/Pods/Specs/External/FortifySec/s2d-df.podspec.json
Pod:     /Users/j.d/Library/Caches/CocoaPods/Pods/External/FortifySec/ds34sd....
- Version: 2.2.1
Type:    External
Spec:    /Users/j.d/Library/Caches/CocoaPods/Pods/Specs/External/FortifySec/sdfsdfdsf....podspec.json
Pod:     /Users/j.d/Library/Caches/CocoaPods/Pods/External/FortifySec/edfs5d7...
AFNetworking:
- Version: 2.5.3
Type:    Release
Spec:    /Users/j.d/Library/Caches/CocoaPods/Pods/Specs/Release/AFNetworking/2.6.podspec.json
Pod:     /Users/j.d/Library/Caches/CocoaPods/Pods/Release/AFNetworking/2.6.3-4e7e2

注意多个 pod 缓存- Version: 2.2.1。这样做可以消除 Pod 缓存使用的不必要的磁盘空间，这是一个好主意。