Add in ~/.fonts.conf the following contents:
<?xml version="1.0" ?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
<match target="font">
<edit name="autohint" mode="assign">
<bool>true</bool>
</edit>
</match>
</fontconfig>
This will help you with your eyes.
Source: https://askubuntu.com/a/1264577
In sleep mode, the content of ram is kept as it is, and the computer works on a very low power mode, so as to keep the ram content intact (as ram will lose the data if power supply is cut to it). But in hibernation, the ram content is stored in the swap space, so power can be completely cut off. Hence it is recommended to have swap size as large as the ram size.
Install the c++ compiler and the other things:
sudo apt-get install build-essential curl
Note: You should also check this post: Preparing C++ Dev infrastructure
Tmux and tmuxinator:
sudo apt-get install tmux tmuxinator
Others:
sudo apt-get install liblz4-tool
# To uncompress a lz4
lz4 -dc --no-sparse archive.tar.lz4 | tar xf -
sudo apt-get install vim
sudo apt-get install sqlitebrowser
MariaDB
sudo apt update
sudo apt install mariadb-server
sudo mysql_secure_installation
sudo mariadb
GRANT ALL PRIVILEGES on *.* to 'root'@'localhost' IDENTIFIED BY 'root';
FLUSH ALL PRIVILEGES;
Docker:
sudo apt-get update
sudo apt-get install \
ca-certificates \
curl \
gnupg \
lsb-release
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin
sudo usermod -aG docker $USER
Kubernetes utils:
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl
sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpg
echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt-get update
sudo apt-get install -y kubectl
From snap:
I usually have a data folder in my home folder, where I keep all my data, including the cache of my browser.
When I switch PCs I have to copy that folder on my new pc, if I try to archive the folder it will create a corupted compressed archive or the compression will fail.
So, to fix this I had to follow the following steps:
# Create a copy of the folder with rsync
# Will copy all folders/files from `data` inside the `data_backup` folder
sudo rsync -a --info=progress2 /home/chreniuc/data/ /home/chreniuc/data_backup/
# Create an archive
tar -cf - data_backup | lz4 -c > data_backup_29.04.2022.tar.lz4
# Copy the archive where you want
cp data_backup_29.04.2022.tar.lz4 destination
# To uncompress a lz4
lz4 -dc --no-sparse data_backup_29.04.2022.tar.lz4 | tar xf -
sudo apt update
sudo apt upgrade
sudo apt autoremove
sudo apt-get remove --purge nvidia*
sudo apt-get remove --purge "nvidia*"
sudo apt install nvidia-driver-470 (you may need other version)
sudo reboot
Source: https://askubuntu.com/a/1362971
Some things were taken from this post, be sure to check it out.
The first thing you should always do is to get the pretty printers and use them to print the variables in gdb. To do this you will need to find the install path of thec gcc that was used to build the executable that has generated a coredump, and inside that path there should be some pretty printers. Usually, this path can be found here(on ubuntu): /usr/share/gcc-10/python/.
In my case it was in /opt/gcc/9.2.0/share/gcc-9.2.0/python/, because the gcc that I was using was built from sources.
That folder contains a folder called: libstdcxx which contains some python scripts that are used to print the variables nicer.
If you are investigating a coredump on a different server, you can copy that folder to the server using scp: scp -r /usr/share/gcc-10/python/ user@server:/path/to/server/.
Pretty printers, added this in ~/.gdbinit:
python
import sys
# gcc-9
sys.path.insert(0, '/usr/share/gcc/python')
from libstdcxx.v6.printers import register_libstdcxx_printers
register_libstdcxx_printers (None)
end
# Will print the whoile object
set pagination off
set print array on
# It will format the output
set print pretty on
I've changed in /etc/apt/sources.list from:
deb-src http://ro.archive.ubuntu.com/ubuntu/ eoan universe
to :
deb mirror://mirrors.ubuntu.com/mirrors.txt eoan universe
If this happens, it means that the best solution is to upgrade your version to a LTS.
This can be done using socat:
socat TCP-LISTEN:5000,fork TCP:localhost:9000
This redirects all tcp connections from port 5000 to 9000. To run this command, the 5000 port shouldn't be already in use.
Get lines that contain the same pattern twice or X times(source):
grep -E "(string.*){2}" file.log