error: git-remote-https died of signal 4 (Solved)

 

"Method https has died unexpectedly! Sub-process https received signal 4" after adding any additional repositories - Ubuntu Desktop 22.04

 

sudo GNUTLS_CPUID_OVERRIDE=0x1 apt-get update 

this works for me

according to this https://groups.google.com/g/linux.debian.bugs.dist/c/ItKoVDieSow

and you need to add ~/.bashrc with this

export  GNUTLS_CPUID_OVERRIDE=0x1 

for long-term use

 

 

Ubuntu安装aptitude，来解决软件包依赖关系的问题

sudo apt-get install aptitude

sudo aptitude update

sudo aptitude search

sudo aptitude install

OAK-D USB

 OAK-D USB

* Luxonics github

  https://github.com/luxonis/depthai

  https://github.com/luxonis/depthai-ros

  https://github.com/luxonis/depthai-hardware

* Luxonics Docs

SW

 DepthAI Tutorials

   - {https://docs.luxonis.com/software/depthai/getting-started/}[Getting Started]

   sudo wget -qO- https://docs.luxonis.com/install_depthai.sh | bash

   - {https://docs.luxonis.com/software/depthai/manual-install/}[Manual DepthAI installation]

   - {https://docs.luxonis.com/software/depthai/hello-world/}[Hello World]

HW

  -- {https://docs.luxonis.com/hardware/platform/deploy/usb-deployment-guide/}[USB deployment guide]

   - {https://docs.luxonis.com/hardware/platform/deploy/to-rpi/}[Deploy with Raspberry Pi]

* turtlebot4 manual

sensor/OAK-D 

https://turtlebot.github.io/turtlebot4-user-manual/software/sensors.html#oak-d

install/run

   # install

   sudo apt install ros-humble-depthai-ros

   # run

   ros2 launch depthai_examples mobile_publisher.launch.py

   # AI examples are available on the DepthAI github.

   # To view the images from these examples you will need to ssh into the robot with a -X flag:

   ssh -X ubuntu@10.42.0.1

.o, .a, .so, .la 如何產生

o, .a, .so, .la 如何產生

• 建立 .o
  $ gcc -c test.c
• 建立 .a
  $ ar -r libtest.a test1.o test2.o
• 建立動態函式庫 .so
  $ gcc -Wall -fpic -shared test1.c test2.c -o libtest.so
• 鍊結函式庫
  $ gcc -Wall -fpic -shared -Ltest test3.c -o libtest.so
• 建立 .la, .la 一般會使用 Makefile 產生, 可以透過下述命令產生:
  $ libtool --mode=link gcc -o libmylib.la -rpath /usr/lib –L/usr/lib –la

Linux 的 .a / .so / .la 函式庫的差異

下述參考自此篇: Linux 下 .a / .so / .la 函式庫區別

• .o (obj file) 是目標物件函式庫, 等同於 Windows 的 .obj
• .a 為靜態函式庫, 可以是 一個 或 多個 .o 合在一起, 用於靜態連結
• .la 為 libtool 生成的共享函式庫, 其實是個設定的檔案. 可以用 file 代替
• .la 可用 vi 來查看
• .so 為動態函式庫, 類似 Windows 的 DLL(Dynamic-link library)檔.
• 補充: 還有一種附檔名為 .ko 的檔案, 不過它是 Linux 核心使用的動態連結文件, 屬於模組程式, 用來在 Linux 系統啟動時, 加掛核心模組用.

Can't log in to ubuntu 12.04 (轉貼)

Can't log in to ubuntu 12.04

up vote2down votefavorite 1

I can't log in to my ubuntu 12.04. Once I login I got returned back to the original screen after a trial to enable X11 Forwarding. Can you help me with this. login shareimprove this question edited Jun 26 '12 at 19:44 Thomas W. 18.3k1357101 asked May 19 '12 at 20:40 Ahmed 16112

Are you trying to login remotely? What did you do to try to enable X11 forwarding? –  izx May 19 '12 at 21:40 Does this only happen when trying to log in remotely? Or are you having this problem logging in locally as well? –  Eliah Kagan Mar 27 '13 at 1:07 Check your .xsession-errors in your home directory, I found an error over there, fixed it, then I can login from desktop. I did try to change the permission and ownership of .Xauthority but it doesn't help in my case. – user288195 Jun 3 '14 at 23:25 add a comment

9 Answers

activeoldestvotes

up vote7down vote

I haven't tried to enable X11Forwarding, but I used to have the same problem. You can fix this in a few steps: When you get to the graphical login screen, hit Ctrl+Alt+F2, thus you get to a textual login. Put in your name and password (password is not displayed when you type, neither as stars or bullets). Type sudo apt-get install gdm and hit enter, give your password and wait to get a line ending with a dollar sign again. Type sudo dpkg-reconfigure gdm. Hit Enter at the first screen. Select gdm in the list you get in the second screen with the arrow keys. Hit the Tab button (above the caps lock one). Now you see the word Ok highlighted. Hit Enter. Type sudo reboot and hit enter. You'll get another graphical login screen, but you'll be able to log in! P.S.: If you are used to running some programs like ifconfig or others which are administrative ones from a terminal emulator (e.g. gnome-terminal) you'd better add a line like PATH="$PATH:/sbin:/usr/sbin" at the end of the .bashrc file in your home directory. You can do it with echo 'PATH="$PATH:/sbin:/usr/sbin"' >> ~/.bashrc. If you want to change back to the other graphical login screen from time to time and see if it was bug-fixed and it works again you can run sudo dpkg-reconfigure gdm and select lightdm and reboot (doesn't look like it works if you just run sudo pkill X). shareimprove this answer edited Sep 11 '13 at 14:42 jokerdino♦ 23.3k1888166 answered May 23 '12 at 10:53 Lorra 1841

(轉貼)How do I tell what type my shell is

How do I tell what type my shell is

up vote6down votefavorite 1

How can I tell what type my shell is? ie, whether it's traditional sh, bash, ksh, csh, zsh etc. Note that checking $SHELL or $0 won't work because $SHELL isn't set by all shells, so if you start in one shell and then start a different one you may still have the old $SHELL. $0 only tells you where the shell binary is, but doesn't tell you whether /bin/sh is a real Bourne shell or bash. I presume that the answer will be "try some features and see what breaks", so if anyone can point me at a script that does that, that'd be great. 3down vote Try to locate the shell path using the current shell PID: ps -p $$ It should work at least with sh, bash and ksh. share|improve this answer answered Mar 2 '11 at 11:20 ziu 1,271726