使用 cat 方式修改文件内容

命令： cat << EOF > 文件名称

root@noway-587f65cd54-767sk:~/noway# cat << EOF > ingress.yaml
> apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: nginx-service-ingress
  annotations:
    kubernetes.io/ingress.class: "nginx"
spec:
  rules:
  - host: {company}.test4u.cn
    http:
      paths:
      - path:
        backend:
          serviceName: {company}-system-edge-ui-app
          servicePort: 80
>
> EOF
root@noway-587f65cd54-767sk:~/noway#