我需要从一个文件夹中的图片中删除所有元数据，但拍摄日期除外。
有没有办法删除所有元数据但有例外？
我使用的当前命令是：
exiftool -all= *.jpg
我试图阅读有关 exiftool 的手册，但我仍然无法使用该命令。
谢谢！
我有 Ubuntu 16.04 LTS，我在初始设置中安装了一些东西，但它很多，我不记得我在哪些步骤中搞砸了，以便apt get update给出这个错误：
Get:48 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 DEP-11 Metadata [4.712 B]
Reading package lists... Done
W: GPG error: http://download.opensuse.org/repositories/home:/Horst3180/xUbuntu_16.04 Release: The following signatures were invalid: KEYEXPIRED 1496576244
E: The repository 'http://download.opensuse.org/repositories/home:/Horst3180/xUbuntu_16.04 Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
我该如何解决这些错误？
我已经下载了 MEGAsync 的 debian 软件包并尝试在 Ubuntu 16.04 上安装：
sudo dpkg -i mega.deb
但它抛出了这个错误：
Selecting previously unselected package megasync.
(Reading database ... 204976 files and directories currently installed.)
Preparing to unpack megasync-xUbuntu_16.10_amd64.deb ...
Unpacking megasync (3.5.3-2.1) ...
dpkg: dependency problems prevent configuration of megasync:
megasync depends on libcrypto++6; however:
Package libcrypto++6 is not installed.
megasync depends on libqt5core5a (>= 5.6.0~beta); however:
Version of libqt5core5a:amd64 on system is 5.5.1+dfsg-16ubuntu7.5.
megasync depends on libqt5svg5 (>= 5.6.0~beta); however:
Version of libqt5svg5:amd64 on system is 5.5.1-2build1.
dpkg: error processing package megasync (--install):
dependency problems - leaving unconfigured
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1) ...
Errors were encountered while processing:
megasync
然后我尝试sudo apt -f install修复这些丢失的依赖项并得到了这个：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages will be REMOVED:
megasync
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 8.368 kB disk space will be freed.
Do you want to continue? [Y/n]
我怎样才能让它修复依赖关系而不删除 MEGAsync？
也试过sudo apt -y install ./megasync-xUbuntu_16.10_amd64.deb并得到：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'megasync' instead of './megasync-xUbuntu_16.10_amd64.deb'
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
megasync : Depends: libcrypto++6 but it is not installable
Depends: libqt5core5a (>= 5.6.0~beta) but 5.5.1+dfsg-16ubuntu7.5 is to be installed
Depends: libqt5svg5 (>= 5.6.0~beta) but 5.5.1-2build1 is to be installed
E: Unable to correct problems, you have held broken packages.
我有一个脚本，可以在我的外部HD中安装Veracrypt容器，将Rsync文件安装到其中，然后卸载容器。
问题是，如果我连续运行两次，或者一段时间后，由于某种原因，我的所有文件都被再次复制，比如目标文件在第一次运行后都被修改了。
不确定这是我的Rsync线路还是VeraCrypt本身的问题。当您挂载和卸载容器时， VeraCrypt是否可能会更改容器内的文件，这就是 Rsync 认为它们被修改的原因？
这是我对虚拟数据使用的脚本示例：
# Dismount all existing containers
veracrypt -d
# Mount container
veracrypt -t --mount /media/${USER}/HD/vault /media/${USER}/veracrypt -p test --non-interactive
# Sync files
rsync -vhr --progress --delete ~/Downloads/WoW/ /media/${USER}/veracrypt/WoW/
# Dismount
veracrypt -d