kubectl namespace switcher

on.sh

# Switch kubernetes namespaces withou touching ~/.kube/config
# Example:
#
#   $ on kube-system
#   NAME          STATUS    AGE
#   kube-system   Active    1y
#   $ k get pod
#

on()
{
  [ -n "$1" ] || return
  kubectl get ns $1 || return
  alias k="kubectl -n ${1:-default}"
  if echo "$PS1" | \grep -q "^<<[^>]*>>" then
    export PS1="${PS1/<<*>> /}"
  fi;
  export PS1="<<$1>> $PS1"
}