有没有办法让 apt-get upgrade 不显示更新日志？

Question

我希望能够在apt-get upgrade没有提示的情况下无缝运行脚本，但在我的实验中，我无法让它停止显示提示，即使使用-y或--force yes。最近，当从头开始设置 RPis 时，这是一个示例，我只需点击q即可继续升级：

ca-certificates (20141019+deb8u2) stable; urgency=medium

  Update Mozilla certificate authority bundle to version 2.9.
    The following certificate authorities were added (+):
    + "Certplus Root CA G1"
    + "Certplus Root CA G2"
    + "Certum Trusted Network CA 2"
    + "Hellenic Academic and Research Institutions ECC RootCA 2015"
    + "Hellenic Academic and Research Institutions RootCA 2015"
    + "ISRG Root X1"
    + "OpenTrust Root CA G1"
    + "OpenTrust Root CA G2"
    + "OpenTrust Root CA G3"
    + "SZAFIR ROOT CA2"
    The following certificate authorities were removed (-):
    - "CA Disig"
    - "NetLock Business (Class B) Root"
    - "NetLock Express (Class C) Root"
    - "NetLock Notary (Class A) Root"
    - "NetLock Qualified (Class QA) Root"
    - "Sonera Class 1 Root CA"
    - "Staat der Nederlanden Root CA"
    - "Verisign Class 1 Public Primary Certification Authority - G2"
    - "Verisign Class 3 Public Primary Certification Authority"
    - "Verisign Class 3 Public Primary Certification Authority - G2"

 -- Michael Shuler <michael@pbandjelly.org>  Fri, 18 Nov 2016 09:09:47 -0600

老实说，即使我手动运行程序，这也很烦人，因为它可能需要几分钟的时间，我会走开，期待回到已完成的任务，却发现它在中途暂停。

我看到了一些关于使它更安静的-qq东西，但我有点担心它可能会覆盖一个与默认值不同的 conf 文件（虽然烦人，但我认为这是可以接受的）。

所以，老实说，我什至不知道如何提出正确的问题——我只是想让这个提示消失。

Answer 1

您看到的输出来自apt-listchanges包，这不是默认的。有多种方法可以防止更改暂停更新过程：

1. APT_LISTCHANGES_FRONTEND=cat在环境中设置
2. 栏目下编辑/etc/apt/listchanges.conf设置frontend=catapt
3. 卸载apt-listchanges软件包