进入 cd/etc 并执行： ls -a
. e2scrub.conf kerneloops.conf os-release shells
.. emacs ldap PackageKit skel
acpi environment ld.so.cache pam.conf snmp
adduser.conf environment.d ld.so.conf pam.d speech-dispatcher
alsa ethertypes ld.so.conf.d papersize ssh
alternatives firefox legal passwd ssl
anacrontab fonts libao.conf passwd- subgid
apache2 fprintd.conf libaudit.conf pcmcia subgid-
apg.conf fstab libblockdev perl subuid
apm fuse.conf libnl-3 pki subuid-
apparmor fwupd libpaper.d pm sudo.conf
apparmor.d gai.conf libreoffice pnm2ppa.conf sudoers
apport gdb lighttpd polkit-1 sudoers.d
appstream.conf gdm3 locale.alias ppp sudo_logsrvd.conf
apt geoclue locale.gen prime-discrete sysctl.conf
avahi ghostscript localtime printcap sysctl.d
bash.bashrc glvnd logcheck profile systemd
bash_completion gnome login.defs profile.d terminfo
bash_completion.d groff logrotate.conf protocols thermald
bindresvport.blacklist group logrotate.d pulse thunderbird
binfmt.d group- lsb-release .pwd.lock timezone
brlapi.key grub.d machine-id pydfrc tmpfiles.d
brltty gshadow magic python3 ubuntu-advantage
brltty.conf gshadow- magic.mime python3.10 ucf.conf
ca-certificates gss mailcap rc0.d udev
ca-certificates.conf gtk-2.0 mailcap.order rc1.d udisks2
chatscripts gtk-3.0 manpath.config rc2.d ufw
console-setup hdparm.conf mime.types rc3.d update-manager
cracklib host.conf mke2fs.conf rc4.d update-motd.d
cron.d hostid ModemManager rc5.d update-notifier
cron.daily hostname modprobe.d rc6.d UPower
cron.hourly hosts modules rcS.d usb_modeswitch.conf
cron.monthly hosts.allow modules-load.d resolv.conf usb_modeswitch.d
crontab hosts.deny mtab rmt vdpau_wrapper.cfg
cron.weekly hp nanorc rpc vim
cups ifplugd netconfig rsyslog.conf vtrgb
cupshelpers init netplan rsyslog.d vulkan
dbus-1 init.d network rygel.conf wgetrc
dconf initramfs-tools networkd-dispatcher sane.d whoopsie
debconf.conf inputrc NetworkManager security wpa_supplicant
debian_version insserv.conf.d networks selinux X11
default ipp-usb newt sensors3.conf xattr.conf
deluser.conf iproute2 nftables.conf sensors.d xdg
depmod.d issue nsswitch.conf services xml
dhcp issue.net OpenCL sgml zsh_command_not_found
dictionaries-common kernel openvpn shadow
dpkg kernel-img.conf opt shadow-
我没有删除任何文件夹。在今天注意到这个问题之前，我以为问题只是我的电脑无法识别它。我可能应该提一下，我正在运行双启动，蓝牙在 Windows 上工作（快速启动已关闭）。如果文件夹真的丢失了，有没有办法再次下载它？
答案1
如果您删除了该目录，这显然是可能的/etc/bluetooth。
所有 Ubuntu 版本都有此目录，conf其中包含一些文件。