SED、GREP、AWK、regex不显示两个模式之间的内容，直到匹配第二个模式的末尾

Question

示例：

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
+           image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
+
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...
demo, demo-app4, Deployment (apps) has been added:
-
+ apiVersion: apps/v1
+ kind: Deployment
+ metadata:
+     heritage: Helm
+       imagePullSecrets:
+         - name: demo-registry
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
+               value: 4.3.0
...
demo, demo-app5, PodDisruptionBudget (policy) has been added:
-
+ apiVersion: policy/v1beta1
+ kind: PodDisruptionBudget
+ metadata:
+       app: app5
+       release: demo
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app8, PodDisruptionBudget (policy) has been added:
-
+ # Source: test/charts/app5/templates/pdb.yaml
+ apiVersion: policy/v1beta1
+     matchLabels:
+       app: app5
+       release: demo
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
+               value: 9.3.0
...

期望输出：

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
+           image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
+
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
+               value: 4.3.0
...
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
+               value: 9.3.0
...

以线条开始图案：added:

结束模式：+不是全部，只是直到它们停在同一块上。

块示例：

demo, demo-app4, Deployment (apps) has been added:
-
+ apiVersion: apps/v1
+ kind: Deployment
+ metadata:
+     heritage: Helm
+       imagePullSecrets:
+         - name: demo-registry

我尝试了这个sed '/added:/,/+,n/d' file，不需要输出：

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43991"
+           image: "imagedemo44236"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
+
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...

我尝试了这个sed '/added:/,/+/d' file，不需要输出：

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43991"
+           image: "imagedemo44236"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
+
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...
+ kind: Deployment
+ metadata:
+     heritage: Helm
+       imagePullSecrets:
+         - name: demo-docker-registry
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...
+ kind: PodDisruptionBudget
+ metadata:
+       app: app5
+       release: demo
../helm_var/test/dev/secrets.yaml.dec
+ apiVersion: policy/v1beta1
+     matchLabels:
+       app: app5
+       release: demo
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...

Answer 1

$ awk '/^[^+-]/{f=(/added:/)} !f' file
demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
+           image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
+
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
+               value: 4.3.0
...
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
+               value: 9.3.0
...

Answer 2

这个Perl做你所描述的：

perl -0777 -pE 's/^.*added:[sS]*?(?=^[^+-])//mg' file

打印：

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
+           image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
+
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
+               value: 4.3.0
...
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
+               value: 4.3.0
...
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
+               value: 9.3.0
...

基于THIS正则表达式。

或者，这个awk:

awk 'BEGIN{f=1} 
/added:$/{f=0; next}
f==0 && /^[^-+]/ {f=1}
f
' file 
# same output...

或者，如果你真的需要少一行：

awk '/added:$/{f=1; next}
f==1 && /^[^-+]/ {f=0}
!f
' file
# same...