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APT

dpkg
# 列出已安裝的套件
dpkg -l

# 列出指定套件的檔案列表
dpkg -L <package name>

# 查詢系統內某個指令檔的套件名稱
dpkg -S <path to command> 

# 查訊套件詳細資訊
dpkg -s <package name>

 

FAQ

Q: GPG error: http://apt.insynchq.com rosa InRelease: The following signatures were invalid: KEYEXPIRED 1473479811

Solution:

$> apt-key list | grep expired

pub   2048R/ACCAF35C 2012-09-10 [expired: 2016-09-10]

$> sudo apt-key adv --recv-keys --keyserver keys.gnupg.net ACCAF35C

# 移除 GPG Key
$> sudo apt-key del ACCAF35C

Q: GPG error: http://repository.spotify.com testing InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A87FF9DF48BF1C90

Solution:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A87FF9DF48BF1C90

Q: The Key of OpenSUSE is expired

GPG error: http://download.opensuse.org/repositories/graphics:/darktable:/stable/xUbuntu_18.04  InRelease: 以下簽名無效： EXPKEYSIG 040524A84C70D8B5 graphics:darktable OBS Project <graphics:darktable@build.opensuse.org>
W: 無法取得 http://download.opensuse.org/repositories/graphics:/darktable:/stable/xUbuntu_18.04/InRelease，以下簽名無效： EXPKEYSIG 040524A84C70D8B5 graphics:darktable OBS Project <graphics:darktable@build.opensuse.org>

Solution:

$> apt-key list | grep -A 1 expired
$> apt-key list | grep -A 1 過期

Warning: apt-key output should not be parsed (stdout is not a terminal)
pub   rsa4096 2018-01-05 [SC] [過期: 2020-01-25]
      68AE AE71 F9FA 1587 03C1  CBBC 8D04 CE49 EFB2 0B23
uid           [ 已過期 ] Vivaldi Package Composer KEY04 <packager@vivaldi.com>

--
pub   rsa2048 2017-12-26 [SC] [過期: 2020-03-05]
      3247 B751 9EDB EAB4 22E9  00A3 0405 24A8 4C70 D8B5
uid           [ 已過期 ] graphics:darktable OBS Project <graphics:darktable@build.opensuse.org>

$> sudo apt-key del 4C70D8B5  #specify last 8 characters

$> wget -nv http://download.opensuse.org/repositories/graphics:/darktable:/stable/xUbuntu_18.04/Release.key -O Release.key
$> apt-key --keyring Release.key finger
$> sudo apt-key add - < Release.key

 

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