Merge pull request #30740 from mtilson/patch-1

short alias to set/show namespace

Author: k8s-ci-robot

content/en/docs/reference/kubectl/cheatsheet.md

@@ -73,6 +73,10 @@ kubectl config set-context gce --user=cluster-admin --namespace=foo \
   && kubectl config use-context gce
 
 kubectl config unset users.foo                       # delete user foo
+
+# short alias to set/show context/namespace (only works for bash and bash-compatible shells, current context to be set before using kn to set namespace) 
+alias kx='f() { [ "$1" ] && kubectl config use-context $1 || kubectl config current-context ; } ; f'
+alias kn='f() { [ "$1" ] && kubectl config set-context --current --namespace $1 || kubectl config view --minify | grep namespace | cut -d" " -f6 ; } ; f'
 ```
 
 ## Kubectl apply