added cli solution description

Author: eviltester

challenger/src/main/resources/content/apichallenges/solutions/miscellaneous/delete-all-todos.md

@@ -44,3 +44,110 @@ Some tools have the ability to issue Data Driven requests, so if you can parse t
 
 Most of the API client tools also have the ability to create scripts to achieve this.
 
+## Deleting All `todo`s using Command Line Tools
+
+I'm going use standard Linux/Unix/Bash commands here.
+
+I can use a combination of `curl`, `jq`, and `xargs` to achieve what I want.
+
+- [cUrl](https://curl.se/) command line HTTP client
+- [jq](https://jqlang.github.io/jq/) a command line JSON processor
+- [xargs](https://pubs.opengroup.org/onlinepubs/9799919799/utilities/xargs.html) piping parameters into commands [examples](https://en.wikipedia.org/wiki/Xargs)
+
+I can use all these linux commands on  Windows using a WSL ((Windows Subsystem for Linux)[https://learn.microsoft.com/en-us/windows/wsl/about])  which means I can use the same commands as a mac and make this solution portable.
+
+I'm running Ubuntu in my WSL
+
+First issue a curl request to get the todos in API challenges.
+
+If I don't know how to create the `culr` command I can generate the `curl` command easily by using Bruno to generate the code (most REST Clients  also have this feature).
+
+- create request in Bruno with the X-CHALLENGER header
+- try it out
+- right click on the item in the left side bar and `Generate Code` and then choose `Shell-Curl`
+
+```
+curl --request GET \
+  --url https://apichallenges.eviltester.com/todos \
+  --header 'X-CHALLENGER: 07466215-9bab-4bf4-9b7d-34b7ac765915'
+```
+
+Replace the `X-CHALLENGER` GUID with your GUID
+
+I will actually save the response into a file to make it easier to work with.
+
+```
+curl --request GET \
+  --url https://apichallenges.eviltester.com/todos \
+  --header 'X-CHALLENGER: 07466215-9bab-4bf4-9b7d-34b7ac765915'
+  > todos.json
+```
+
+The response is JSON, I want to parse that JSON to find all the ids, because I'm going to use that list of ids to delete them all.
+
+I will use JQ for that.
+
+The command below iterates over all the items in the todo array and extracts the id
+
+```
+jq '.todos[].id' todos.json
+```
+
+I can save this list to a file
+
+```
+jq '.todos[].id' todos.json > ids.txt
+```
+
+Then if I `cat ids.txt` I can see all the ids
+
+```
+> cat ids.txt
+1
+8
+5
+2
+6
+3
+9
+7
+4
+10
+```
+
+I then want to call curl for each of these values and I can use `xargs` to do that
+
+```
+cat ids.txt | xargs -I % curl --request DELETE \
+  --url https://apichallenges.eviltester.com/todos/% \
+  --header 'X-CHALLENGER: 07466215-9bab-4bf4-9b7d-34b7ac765915'
+```
+
+I can double check that I have deleted them by looking at the API Challenges progress page.
+
+Or just call the `GET /todos` and see an empty array
+
+```
+> curl --request GET   --url https://apichallenges.eviltester.com/todos   --header 'X-CHALLENGER: 07466215-9bab-4bf4-9b7d-34b7ac765915'
+
+{"todos":[]}
+```
+
+
+Or I could do it all in one command:
+
+```
+curl --request GET \
+  --url https://apichallenges.eviltester.com/todos \
+  --header 'X-CHALLENGER: 880c5857-dbff-4266-b419-701efa804679' |
+jq '.todos[].id' |
+xargs -I % curl --request DELETE \
+  --url https://apichallenges.eviltester.com/todos/% \
+  --header 'X-CHALLENGER: 880c5857-dbff-4266-b419-701efa804679'
+```
+
+## Delete All Todos Using Command Line Tools Video
+
+{{<youtube-embed key="7Kz97rn7f3I" title="Solution to Delete all Todos in default format">}}
+
+[Patreon ad free version](https://www.patreon.com/posts/119362209)