在将时间戳转换为秒数、添加一些秒数并将结果转换回时间戳的 bash 脚本中，我从 date 命令中获得了错误的结果。原因如下：
$ dt=$(date '+%s' -u --date="2024-11-25 20:31:00")
$ echo $dt
1732566660
$ date '+%F %T' -u --date="$dt seconds"
2079-10-21 22:33:33
我做错什么了？
我对这一切都不熟悉，了解不多，但使用的代码是split -b 4GB Super Smash Bros Brawl [RSBE01]，它说split: extra operand "Bros"，我多次更改代码，通过添加 -、更改大小、删除它说的单词，以及添加/删除文件类型 (wbfs)，但我总是得到这个，不知道该怎么做。有人知道如何解决这个问题吗？我花了两天时间在网上寻求帮助。我只是想在我的 Wii 上玩它。更新：我删除了文件名中的所有空格，现在它说Split: cannot open 'SuperSmashBrosBrawl' for reading. No such file exists or directory.更新 2：问题解决了。谢谢你们的帮助
我正在使用带有 GNOME 桌面环境的 Ubuntu 22.04。
另外，我可以在登录时选择桌面环境/Windows 管理器的其他组合：
- GNOME 经典
- X11 上的 GNOME
- Ubuntu
- X11 上的 Ubuntu
除了安装 GNOME 扩展之外，我也喜欢 GNOME，但我注意到在该桌面环境中，我看不到右上角的图标来最小化和最大化窗口。
如果我选择选项 3 或 4，我可以看到图标，但 GNOME 没有最小/最大功能。我该如何解决这个问题？
我正在尝试从 IOS iPad 连接到 Ubuntu 计算机。按照此处的说明（您可以将 iPhone 连接到 Ubuntu 媒体共享吗？）我已经共享了我的用户文档文件夹并连接到它，但当我尝试打开它时，我收到“内容不可用”消息（见屏幕截图）。我在网上读到了一些建议，删除 IOS 上的文件应用程序并再次下载，重新启动 iPad - 但这些都没有改变。有什么想法可能是什么问题吗？
更新 1：
以下是文件内容/etc/samba/smb.conf。我使用的是 Ubuntu 22.04。我也尝试过从 OSX 连接到 Ubuntu 计算机 - 同样的问题，连接但不显示内容。
# Sample configuration file for the Samba suite for Debian GNU/Linux.
#
#
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options most of which
# are not shown in this example
#
# Some options that are often worth tuning have been included as
# commented-out examples in this file.
# - When such options are commented with ";", the proposed setting
# differs from the default Samba behaviour
# - When commented with "#", the proposed setting is the default
# behaviour of Samba but the option is considered important
# enough to be mentioned here
#
# NOTE: Whenever you modify this file you should run the command
# "testparm" to check that you have not made any basic syntactic
# errors.
#======================= Global Settings =======================
[global]
## Browsing/Identification ###
# Change this to the workgroup/NT-domain name your Samba server will part of
workgroup = WORKGROUP
# server string is the equivalent of the NT Description field
server string = %h server (Samba, Ubuntu)
#### Networking ####
# The specific set of interfaces / networks to bind to
# This can be either the interface name or an IP address/netmask;
# interface names are normally preferred
; interfaces = 127.0.0.0/8 eth0
# Only bind to the named interfaces and/or networks; you must use the
# 'interfaces' option above to use this.
# It is recommended that you enable this feature if your Samba machine is
# not protected by a firewall or is a firewall itself. However, this
# option cannot handle dynamic or non-broadcast interfaces correctly.
; bind interfaces only = yes
#### Debugging/Accounting ####
# This tells Samba to use a separate log file for each machine
# that connects
log file = /var/log/samba/log.%m
# Cap the size of the individual log files (in KiB).
max log size = 1000
# We want Samba to only log to /var/log/samba/log.{smbd,nmbd}.
# Append syslog@1 if you want important messages to be sent to syslog too.
logging = file
# Do something sensible when Samba crashes: mail the admin a backtrace
panic action = /usr/share/samba/panic-action %d
####### Authentication #######
# Server role. Defines in which mode Samba will operate. Possible
# values are "standalone server", "member server", "classic primary
# domain controller", "classic backup domain controller", "active
# directory domain controller".
#
# Most people will want "standalone server" or "member server".
# Running as "active directory domain controller" will require first
# running "samba-tool domain provision" to wipe databases and create a
# new domain.
server role = standalone server
obey pam restrictions = yes
# This boolean parameter controls whether Samba attempts to sync the Unix
# password with the SMB password when the encrypted SMB password in the
# passdb is changed.
unix password sync = yes
# For Unix password sync to work on a Debian GNU/Linux system, the following
# parameters must be set (thanks to Ian Kahan <<[email protected]> for
# sending the correct chat script for the passwd program in Debian Sarge).
passwd program = /usr/bin/passwd %u
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
# This boolean controls whether PAM will be used for password changes
# when requested by an SMB client instead of the program listed in
# 'passwd program'. The default is 'no'.
pam password change = yes
# This option controls how unsuccessful authentication attempts are mapped
# to anonymous connections
map to guest = bad user
########## Domains ###########
#
# The following settings only takes effect if 'server role = classic
# primary domain controller', 'server role = classic backup domain controller'
# or 'domain logons' is set
#
# It specifies the location of the user's
# profile directory from the client point of view) The following
# required a [profiles] share to be setup on the samba server (see
# below)
; logon path = \\%N\profiles\%U
# Another common choice is storing the profile in the user's home directory
# (this is Samba's default)
# logon path = \\%N\%U\profile
# The following setting only takes effect if 'domain logons' is set
# It specifies the location of a user's home directory (from the client
# point of view)
; logon drive = H:
# logon home = \\%N\%U
# The following setting only takes effect if 'domain logons' is set
# It specifies the script to run during logon. The script must be stored
# in the [netlogon] share
# NOTE: Must be store in 'DOS' file format convention
; logon script = logon.cmd
# This allows Unix users to be created on the domain controller via the SAMR
# RPC pipe. The example command creates a user account with a disabled Unix
# password; please adapt to your needs
; add user script = /usr/sbin/adduser --quiet --disabled-password --gecos "" %u
# This allows machine accounts to be created on the domain controller via the
# SAMR RPC pipe.
# The following assumes a "machines" group exists on the system
; add machine script = /usr/sbin/useradd -g machines -c "%u machine account" -d /var/lib/samba -s /bin/false %u
# This allows Unix groups to be created on the domain controller via the SAMR
# RPC pipe.
; add group script = /usr/sbin/addgroup --force-badname %g
############ Misc ############
# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting
; include = /home/samba/etc/smb.conf.%m
# Some defaults for winbind (make sure you're not using the ranges
# for something else.)
; idmap config * : backend = tdb
; idmap config * : range = 3000-7999
; idmap config YOURDOMAINHERE : backend = tdb
; idmap config YOURDOMAINHERE : range = 100000-999999
; template shell = /bin/bash
# Setup usershare options to enable non-root users to share folders
# with the net usershare command.
# Maximum number of usershare. 0 means that usershare is disabled.
# usershare max shares = 100
# Allow users who've been granted usershare privileges to create
# public shares, not just authenticated ones
usershare allow guests = yes
#======================= Share Definitions =======================
# Un-comment the following (and tweak the other settings below to suit)
# to enable the default home directory shares. This will share each
# user's home directory as \\server\username
;[homes]
; comment = Home Directories
; browseable = no
# By default, the home directories are exported read-only. Change the
# next parameter to 'no' if you want to be able to write to them.
; read only = yes
# File creation mask is set to 0700 for security reasons. If you want to
# create files with group=rw permissions, set next parameter to 0775.
; create mask = 0700
# Directory creation mask is set to 0700 for security reasons. If you want to
# create dirs. with group=rw permissions, set next parameter to 0775.
; directory mask = 0700
# By default, \\server\username shares can be connected to by anyone
# with access to the samba server.
# Un-comment the following parameter to make sure that only "username"
# can connect to \\server\username
# This might need tweaking when using external authentication schemes
; valid users = %S
# Un-comment the following and create the netlogon directory for Domain Logons
# (you need to configure Samba to act as a domain controller too.)
;[netlogon]
; comment = Network Logon Service
; path = /home/samba/netlogon
; guest ok = yes
; read only = yes
# Un-comment the following and create the profiles directory to store
# users profiles (see the "logon path" option above)
# (you need to configure Samba to act as a domain controller too.)
# The path below should be writable by all users so that their
# profile directory may be created the first time they log on
;[profiles]
; comment = Users profiles
; path = /home/samba/profiles
; guest ok = no
; browseable = no
; create mask = 0600
; directory mask = 0700
[printers]
comment = All Printers
browseable = no
path = /var/spool/samba
printable = yes
guest ok = no
read only = yes
create mask = 0700
# Windows clients look for this share name as a source of downloadable
# printer drivers
[print$]
comment = Printer Drivers
path = /var/lib/samba/printers
browseable = yes
read only = yes
guest ok = no
# Uncomment to allow remote administration of Windows print drivers.
# You may need to replace 'lpadmin' with the name of the group your
# admin users are members of.
# Please note that you also need to set appropriate Unix permissions
# to the drivers directory for these users to have write rights in it
; write list = root, @lpadmin
更新2：
以下输出net usershare info --long：
$ net usershare info --long
[Documents]
path=/home/garrett/Documents
comment=
usershare_acl=Everyone:F,
guest_ok=n
我有一张网卡，我想将两个接口连接到它。一个接口是 DHCP 和mtu: 1500。另一个接口是静态 IP 和mtu: 9000。
我该如何通过 进行配置netplan，或者，如果不可能的话，在 中systemd-networkd？
我有一台 Brother HLL2390DW 一体式打印机，通过 USB 连接到我的 Kubuntu 22.04 笔记本电脑，使用brother-HLL2390DW-cups-en.ppd他们的网站。
如果我发出一个，lp file1.pdf它可以正常工作，但如果我发出一个lp file1.pdf file2.pdf，打印机会唤醒，但不会打印任何内容。
/var/log/cups/error_log显示：
W [23/Nov/2024:00:00:28 -0500] Printer drivers are deprecated and will stop working in a future version of CUPS. See https://github.com/OpenPrinting/cups/issues/103
W [23/Nov/2024:02:05:49 -0500] Printer drivers are deprecated and will stop working in a future version of CUPS. See https://github.com/OpenPrinting/cups/issues/103
W [23/Nov/2024:05:17:30 -0500] Printer drivers are deprecated and will stop working in a future version of CUPS. See https://github.com/OpenPrinting/cups/issues/103
E [23/Nov/2024:18:22:58 -0500] [Job 66] Unable to add document to print job.
E [23/Nov/2024:18:46:36 -0500] [Job 67] Unable to add document to print job.
E [23/Nov/2024:18:59:48 -0500] [Job 69] Print job canceled at printer.
W [23/Nov/2024:18:59:48 -0500] [Job 69] Backend returned status 5 (cancel job)
E [23/Nov/2024:19:04:23 -0500] [Job 70] Unable to add document to print job.
E [23/Nov/2024:19:04:31 -0500] [Job 70] Print job canceled at printer.
W [23/Nov/2024:19:04:31 -0500] [Job 70] Backend returned status 5 (cancel job)
$ lpstat -a
Brother_HL_L2390DW_USB not accepting requests since Sat 23 Nov 2024 05:36:03 PM EST -
Rejecting Jobs
BrotherHLL2390D not accepting requests since Sat 02 Nov 2024 08:10:19 PM EDT -
Rejecting Jobs
HLL2390DW accepting requests since Sat 23 Nov 2024 07:12:01 PM EST
另外两个实例来自之前尝试使用以太网转 USB 打印服务器适配器等将打印机连接为网络打印机的情况。（一旦成功，我会就此提出一个单独的问题。）我手动禁用了它们。
我在我的 ubuntu 核心机器上使用 ffmpeg snap 从 ip 摄像机接收视频包并将其作为 mp4 视频文件保存在我的 ubuntu 核心机器上，但是当我尝试使用 ffmpeg 播放视频时，我无法做到这一点，那么在 ubuntu 核心机器上显示视频的正确方法是什么。
我已经尝试过：
- Mpv 连接到 ubuntu-frame
- ffmpeg 连接到 ubuntu-frame
是的，我的 ubuntu 核心使用 wayland 与 wpe-kit-kiosk 配合得很好。提前致谢。
我正在尝试在我的 PC 上双启动 Windows 10 和 Ubuntu。我在 UEFI 模式下使用 Rufus 制作了 Ubuntu 24.04 安装介质。Windows 位于 GPT 分区上，安全启动和快速启动被禁用，SATA 配置设置为 AHCI 和 UEFI，但 Ubuntu 安装程序仍然没有读取分区。我为 Ubuntu 安装添加了 55GB 未分配空间。
Ubuntu 安装程序也显示分区表错误，但磁盘可以读取和访问所有分区。有人能告诉我我遗漏了什么吗？
终端中的磁盘命令还显示 MBP 受到保护且 GPT 存在。Bitlocker 已关闭
我在个人笔记本电脑上安装了 Ubuntu，并连接到酒店 wifi，我之前在同一台电脑上使用 Windows。这个网络是标准的酒店 wifi，您需要以客人身份输入凭据才能访问，但它直接连接，没有任何提示，就像绕过了路由器提示一样。
我的问题是它是如何做到的？它是否检测到了我笔记本电脑的 MAC 地址，然后就认为是我？
我有一台安装了 Ubuntu 24.04 LTS 的笔记本电脑，我正在尝试用最新版本（3.4.8，根据我在互联网上找到的信息，官方 PPA 中不久后将不再提供）替换默认的 Rhythmbox（版本 3.4.7）。我暂时不想使用 Flatpak，而且我也有兴趣学习一次“香肠是如何制作的”。
我已成功完成Rhythmbox GitLab的安装过程。现在我可以使用以下命令从安装目录启动 Rhythmbox：
$ export GSETTINGS_SCHEMA_DIR=$PWD/_install/share/glib-2.0/schemas
$ _install/bin/rhythmbox
我的问题是：如何才能将其转变为标准行为应用程序？基本上，我希望它的行为像 Rhythmbox 的默认版本一样，带有启动器等。
我的猜测（未经证实）是：
- 将编译结果移动到默认应用程序位置（类似于
usr/bin） - 制作启动脚本（见上面两行）
- 创建一个带有快捷方式的启动器（类似于此）
正确的做法是什么？