老师，请教下这个问题

来源：6-17 playbook剧本中的变量定义方式

sunshinebao

2018-05-12

more f4.yml
---
- hosts : 192.168.226.129
remote_user : root
vars :
    touch_file : imoocc.file
tasks :
     - name : get date
       command : date
       register : date_output
     - name : touch file
       shell : "touch /tmp/{{touch_file}}"
     - name : echo date_output
       shell : "echo {{date_output.stdout}}>/tmp/{{touch_file}}"

root@ubuntu:/etc/ansible# ansible-playbook ./f4.yml

PLAY [192.168.226.129] ******************************************************************

TASK [Gathering Facts] ******************************************************************
ok: [192.168.226.129]

TASK [get date] *************************************************************************
changed: [192.168.226.129]

TASK [touch file] ***********************************************************************
[WARNING]: Consider using file module with state=touch rather than running touch

changed: [192.168.226.129]

TASK [echo date_output] *****************************************************************
fatal: [192.168.226.129]: FAILED! => {"changed": true, "cmd": "echo Fri May 11 15:52:00 PDT 2018>/tmp/imoocc.file", "delta": "0:00:00.002548", "end": "2018-05-11 15:52:01.370891", "failed": true, "msg": "non-zero return code", "rc": 1, "start": "2018-05-11 15:52:01.368343", "stderr": "/bin/sh: 2018: Bad file descriptor", "stderr_lines": ["/bin/sh: 2018: Bad file descriptor"], "stdout": "", "stdout_lines": []}
to retry, use: --limit @/etc/ansible/f4.retry

PLAY RECAP ******************************************************************************
192.168.226.129 : ok=3 changed=2 unreachable=0 failed=1

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