Ubuntu – 元几录 https://blog.dpean.com Tue, 04 Nov 2025 12:06:00 +0000 zh-Hans hourly 1 https://wordpress.org/?v=6.8.3 https://blog.dpean.com/wp-content/uploads/2025/08/cropped-logo-1-150x150.png Ubuntu – 元几录 https://blog.dpean.com 32 32 Waydroid全屏显示 https://blog.dpean.com/%e7%9f%a5%e8%af%86/waydroid%e5%85%a8%e5%b1%8f%e6%98%be%e7%a4%ba/ Tue, 04 Nov 2025 12:05:59 +0000 https://blog.dpean.com/?p=705 查看及自定义快捷键 -> 窗口 -> 切换…]]> 打开 设置 -> 查看及自定义快捷键 -> 窗口 -> 切换全屏模式 ，我这里设置的是 Shift+F11

参考资料

  1. force a specific app to launch in full screen/without top bar #1558 – github
]]> Ubuntu安装：无法将grub安装到/dev/sda https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu%e5%ae%89%e8%a3%85bug%ef%bc%9a%e6%97%a0%e6%b3%95%e5%b0%86grub%e5%ae%89%e8%a3%85%e5%88%b0-dev-sda/ Mon, 03 Nov 2025 10:03:13 +0000 https://blog.dpean.com/?p=673 问题描述：Ubuntu-24.04.3LTS使用UEFI安装时，会出现 无法将grub安装到/dev/sda Bug

解决方案：我这里使用非UEFI装机就可以了（虽然很慢）

参考资料

  1. ubuntu22.04安装单系统出错“无法将GURB安装到/dev/sda”的详细解决方案
]]> Ubuntu设置定时任务 https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu%e8%ae%be%e7%bd%ae%e5%ae%9a%e6%97%b6%e4%bb%bb%e5%8a%a1/ Mon, 08 Sep 2025 07:41:50 +0000 https://blog.dpean.com/?p=443 使用cron配置

例：飞牛配置每天03:02重启

Bash
su #root登录
vi /etc/crontab

在配置文件的最后一行添加：2 3 * * * root reboot，如下方代码所示

Bash
# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.

SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# Example of job definition:
# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  * user-name command to be executed
17 *	* * *	root	cd / && run-parts --report /etc/cron.hourly
25 6	* * *	root	test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.daily; }
47 6	* * 7	root	test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.weekly; }
52 6	1 * *	root	test -x /usr/sbin/anacron || { cd / && run-parts --report /etc/cron.monthly; }
#
2 3	* * *	root	reboot #添加此行，上方"Example of job definition"有其对应的含义
Bash
systemctl restart cron
systemctl status cron

/etc中每个cron文件夹代表含义

Bash
/etc/cron.d/ #存放系统级别额外crontab配置
/etc/cron.hourly/
/etc/cron.daily/
/etc/cron.weekly/
/etc/cron.monthly/ #cron会分别每小时、每天、每周、每月自动运行这些目录中的脚本 /etc/crontab中有记录

参考资料

  1. ubuntu 使用cron设置定时启动任务
]]> Ubuntu22.04 设置静态IP https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu22-04-%e8%ae%be%e7%bd%ae%e9%9d%99%e6%80%81ip/ Fri, 11 Apr 2025 00:45:40 +0000 https://dpean.com/?p=250 安装net-tools、openvswitch-switch

Bash
su
apt install net-tools
apt install openvswitch-switch

查看网卡名

Bash
ifconfig
#enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
#        inet 192.168.50.3  netmask 255.255.255.0  broadcast 192.168.50.255
#        inet6 fe80::2e0:b4ff:fe1c:704b  prefixlen 64  scopeid 0x20<link>
#        inet6 fdc2:8c5e:7c48:5348:2e0:b4ff:fe1c:704b  prefixlen 64  scopeid 0x0<global>
#        ether 00:e0:b4:1c:70:4b  txqueuelen 1000  (Ethernet)
#        RX packets 26226  bytes 34068377 (34.0 MB)
#        RX errors 0  dropped 1196  overruns 0  frame 0
#        TX packets 2935  bytes 362905 (362.9 KB)
#        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
#        device memory 0xd0600000-d061ffff  

#lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
#        inet 127.0.0.1  netmask 255.0.0.0
#        inet6 ::1  prefixlen 128  scopeid 0x10<host>
#        loop  txqueuelen 1000  (Local Loopback)
#        RX packets 146  bytes 13595 (13.5 KB)
#        RX errors 0  dropped 0  overruns 0  frame 0
#        TX packets 146  bytes 13595 (13.5 KB)
#        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

配置netplan

Bash
cd /etc/netplan
cp 50-cloud-init.yaml 50-cloud-init.yaml.bak
#文件名会有不同
vi 50-cloud-init.yaml
YAML
network:
 version: 2
 renderer: networkd
 ethernets:
  enp3s0:
  #网卡名
   addresses:
    - 192.168.50.3/24
    #静态ip
   nameservers:
    addresses: [8.8.8.8,114.114.114.114]
    #dns
   routes:
    - to: default
      via: 192.168.50.1
      #网关
Bash
netplan apply

禁止Ubuntu默认云覆盖

Bash
vi /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
JSON
network: {config: disabled} //将此行代码取消注释

参考资料

  1. 如何在 Ubuntu 服务器 22.04 上设置静态 IP 地址
  2. Ubuntu Server 22.04.5 LTS重启后IP被重置问题
]]> Ubuntu装机：那些熟悉的 “老伙计” https://blog.dpean.com/%e7%9f%a5%e8%af%86/%e5%b7%a7%e5%90%88%e7%9a%84%e6%8e%a8%e8%8d%90/ Fri, 11 Apr 2025 00:22:17 +0000 https://dpean.com/?p=241

刚上手新系统，一番探索竟有意外惊喜—装机推荐列表里，藏着好几位曾朝夕相伴的 “老伙计”。

从服务部署与运维角度看，Docker 作为容器化核心工具，可实现应用环境的标准化封装与快速迁移，新系统预装该工具，能大幅缩短后续项目的环境搭建周期，降低因环境差异导致的部署故障风险；Keepalived 作为高可用解决方案的关键组件，其预装为服务稳定性保障提供了基础支持，有助于提前构建业务系统的冗余架构，减少后期高可用改造的复杂度。​

在数据管理与自动化操作层面，PGSQL 作为成熟的关系型数据库，在处理结构化业务数据时具备稳定的性能与完善的功能，其被纳入推荐列表，为需要构建数据存储系统的工作场景提供了可靠选择，避免了从零选型与部署数据库的成本；PowerShell 则凭借强大的脚本编写与系统管理能力，能够满足自动化运维、批量任务处理等需求，预装该工具可快速启动自动化工作流程，提升系统管理效率。​

而 Mosquitto 作为轻量级 MQTT 协议代理工具，在物联网设备通信、分布式系统消息传递等场景中应用广泛，新系统对其的支持，意味着针对物联网相关的开发或运维工作可快速开展，无需额外投入资源进行工具部署与环境配置。​

]]> Ubuntu22.04 修改时区 https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu22-04-%e4%bf%ae%e6%94%b9%e6%97%b6%e5%8c%ba/ Fri, 11 Apr 2025 00:14:33 +0000 https://dpean.com/?p=237 查看当前时间及时区

Bash
date -R
#Fri, 11 Apr 2025 00:05:08 +0000

运行tzselect，依次选择Asia – China – Beijing

Bash
tzselect
#Please identify a location so that time zone rules can be set correctly.
#Please select a continent, ocean, "coord", or "TZ".
#1) Africa                                                            7) Europe
#2) Americas                                                          8) Indian Ocean
#3) Antarctica                                                        9) Pacific Ocean
#4) Asia                                                             10) coord - I want to use geographical coordinates.
#5) Atlantic Ocean                                                   11) TZ - I want to specify the timezone using the Posix TZ format.
#6) Australia
? 4
#Please select a country whose clocks agree with yours.
# 1) Afghanistan              13) Cocos (Keeling) Islands  25) Jordan                   37) Nepal                    49) Syria
# 2) Antarctica               14) Cyprus                   26) Kazakhstan               38) Oman                     50) Taiwan
# 3) Armenia                  15) East Timor               27) Korea (North)            39) Pakistan                 51) Tajikistan
# 4) Australia                16) French S. Terr.          28) Korea (South)            40) Palestine                52) Thailand
# 5) Azerbaijan               17) Georgia                  29) Kuwait                   41) Philippines              53) Turkmenistan
# 6) Bahrain                  18) Hong Kong                30) Kyrgyzstan               42) Qatar                    54) United Arab Emirates
# 7) Bangladesh               19) India                    31) Laos                     43) Réunion                  55) Uzbekistan
# 8) Bhutan                   20) Indonesia                32) Lebanon                  44) Russia                   56) Vietnam
# 9) Brunei                   21) Iran                     33) Macau                    45) Saudi Arabia             57) Yemen
#10) Cambodia                 22) Iraq                     34) Malaysia                 46) Seychelles
#11) China                    23) Israel                   35) Mongolia                 47) Singapore
#12) Christmas Island         24) Japan                    36) Myanmar (Burma)          48) Sri Lanka
? 11
#Please select one of the following timezones.
#1) Beijing Time
#2) Xinjiang Time
? 1

#The following information has been given:

#        China
#        Beijing Time

#Therefore TZ='Asia/Shanghai' will be used.
#Selected time is now:   Fri Apr 11 08:05:54 CST 2025.
#Universal Time is now:  Fri Apr 11 00:05:54 UTC 2025.
#Is the above information OK?
#1) Yes
#2) No
? 1

#You can make this change permanent for yourself by appending the line
#        TZ='Asia/Shanghai'; export TZ
#to the file '.profile' in your home directory; then log out and log in again.

#Here is that TZ value again, this time on standard output so that you
#can use the /usr/bin/tzselect command in shell scripts:
#Asia/Shanghai

复制文件至etc

Bash
cp /usr/share/zoneinfo/Asia/Shanghai  /etc/localtime

检查

Bash
date -R
#Fri, 11 Apr 2025 08:06:12 +0800

参考资料

  1. Ubuntu修改时区和更新时间
]]> Ubuntu 22.04 查看版本信息 https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu%e6%9f%a5%e7%9c%8b%e7%89%88%e6%9c%ac%e4%bf%a1%e6%81%af/ Tue, 01 Apr 2025 21:07:34 +0000 https://dpean.com/?p=216 Bash
cat /proc/version
#显示：Linux version 5.15.0-106-generic (buildd@lcy02-amd64-017) (gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #116-Ubuntu SMP Wed Apr 17 09:17:56 UTC 2024
Bash
uname -a
#显示：Linux jp 5.15.0-106-generic #116-Ubuntu SMP Wed Apr 17 09:17:56 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux
Bash
lsb_release -a
#显示：LSB Version:    core-11.1.0ubuntu4-noarch:security-11.1.0ubuntu4-noarch
#Distributor ID: Ubuntu
#Description:    Ubuntu 22.04.4 LTS
#Release:        22.04
#Codename:       jammy

参考资料

  1. ubuntu查看系统版本
]]> Ubuntu 22.04 查看系统架构 https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu22-04%e6%9f%a5%e7%9c%8b%e7%b3%bb%e7%bb%9f%e6%9e%b6%e6%9e%84/ Tue, 01 Apr 2025 21:02:39 +0000 https://dpean.com/?p=214 Bash
arch
#显示：x86_64
Bash
dpkg --print-architecture
#显示：amd64

参考资料

  1. Ubuntu 20.04 – 查看操作系统架构
]]> Ubuntu 修改主机名 https://blog.dpean.com/%e7%9f%a5%e8%af%86/ubuntu%e4%bf%ae%e6%94%b9%e4%b8%bb%e6%9c%ba%e5%90%8d/ Mon, 10 Mar 2025 05:54:43 +0000 https://dpean.com/?p=149 Bash
hostname server #临时修改，重启服务器后不生效
vi /etc/hostname #永久修改
]]>