#1 - 2020-6-10 19:29
月棍年刀一辈子枪 (相看两不厌, 只有敬亭山)
我之前用的 dolphin 能看目录中图片文件的 thumbnail. 从某次重装之后就只能看代表文件类型的图标了. 我暂时只有 dolphin, 没有 kde-full kubuntu-desktop etc. 我 apt.conf 关了 APT::Install-Recommends.

dolphin ~ |& awk '!_[$0]++'
kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "stash"
Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.ServiceUnknown"
"The name org.freedesktop.UDisks2 was not provided by any .service files"
kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "mtp"
org.kde.dolphin: Ignore KIO url: QUrl("timeline:/today")
org.kde.dolphin: Ignore KIO url: QUrl("timeline:/yesterday")
org.kde.dolphin: Ignore KIO url: QUrl("timeline:/thismonth")
org.kde.dolphin: Ignore KIO url: QUrl("timeline:/lastmonth")
org.kde.dolphin: Ignore KIO url: QUrl("search:/documents")
org.kde.dolphin: Ignore KIO url: QUrl("search:/images")
org.kde.dolphin: Ignore KIO url: QUrl("search:/audio")
org.kde.dolphin: Ignore KIO url: QUrl("search:/videos")
qt.accessibility.core: Cannot create accessible child interface for object:  PlacesView(0x55bd7b341680)  index:  12
kdeinit5: Got EXEC_NEW '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/file.so'
kdeinit5: Got EXEC_NEW '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/trash.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/trash.so'
kf5.kio.trash: listdir:  QUrl("trash:/")
kdeinit5: Got EXEC_NEW '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/file.so' from launcher.
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/kio/file.so'
Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.ServiceUnknown"
"The name org.freedesktop.UDisks2 was not provided by any .service files"
Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.ServiceUnknown"
"The name org.freedesktop.UDisks2 was not provided by any .service files"
QPixmap::scaled: Pixmap is a null pixmap
kf5.kservice.services: KServiceTypeTrader: serviceType "ThumbCreator" not found
kf5.kio.core: KLocalSocket(0x55bd7b33c580) Jumbo packet of 75472 bytes
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setOpacity: Painter not active
QPainter::setCompositionMode: Painter not active
kdeinit5: PID 5986 terminated.
kdeinit5: PID 5989 terminated.
kdeinit5: PID 5987 terminated.
感觉 kf5.kservice.services: KServiceTypeTrader: serviceType "ThumbCreator" not found 有问题. 我拣几个名儿看着象的 package 装了也没用.
#2 - 2020-6-10 19:45
(相看两不厌, 只有敬亭山)
题外话, 我疑惑了一阵子为啥 awk '!_[$0]++' 之后还有重复的, 原来是后台进程. systemd 能用 cgroup 追踪后台进程. 这种场合有没有轻量的 utility 追踪后台进程输出的?