Useful Tools for Linux

• https://www.baeldung.com/linux/specific-dns-for-specific-domain

sudo apt install git &&
git clone https://github.com/jalcocert/RPi.git &&
cd RPi &&
git pull #to make sure its up to date (a cron task could be scheduled)

If you want to add a cron task for this, simply edit, as explained:

0 0 * * * cd RPi && git pull
@reboot cd RPi && git pull

Now your imagination is the limit.

Let’s create a script that when your PC is booting, it will sync a given list of repositories from your Gitea instance.

nano git_sync.sh

If you want to add a cron task for this, simply edit, as explained:

Make it executable:

chmod +x /home/jalcocert/Desktop/GIT_SYNC/git_sync.sh

#@reboot /home/jalcocert/Desktop/GIT_SYNC/git_sync.sh >> /home/jalcocert/Desktop/GIT_SYNC/git_sync.log 2>&1
@reboot /home/jalcocert/Desktop/GIT_SYNC/git_sync_v2.sh http://192.168.3.200:3033/fossengineer/FOSSENGINEER FOSSENGINEER http://192.168.3.200:3033/fossengineer/Py_Stocks Py_Stocks >> /home/jalcocert/Desktop/GIT_SYNC/git_sync_v2.log 2>&1

#crontab -l #verify its added

With Zeit - Let’s add the PPA and install it in Ubuntu:

sudo add-apt-repository ppa:blaze/main
sudo apt update
sudo apt install zeit
#zeit #UI is ready!

You can also manage Cron tasks with UI’s thanks to projects like: cronicle, nodered, n8n…

With the Passive Monitor - Push:

Together with this python script and the crontab:

@reboot /home/jalcocert/Desktop/GIT_SYNC/git_sync_uptimekuma.py

Lets first check the storages connected to the machine and identify their current path:

sudo fdisk -l
#lsblk

With this information we can create an automount entry in fstab:

sudo mkdir /mnt/data_mounted \
mount /dev/sdb1 /mnt/data_mounted/ #example

Depending on the file system, this might be needed:

mount -t ntfs /dev/sdb1 /mnt/data_mounted

If we know the UUID of the device, we can simply:

sudo mount UUID=92C269FAC269E2C9 /mnt/data_mounted

To do it automatically for a specific external device that we would have we need to find the UUID (Universal Unique Identifier) of the particular drive:

Option 1:

sudo blkid | grep /dev/sda2 | grep UUID= #example

Check what is mounted and where with:

df -h
#sudo snap install dust #to see what takes most space

lets add the automount entry in:

sudo nano /etc/fstab
#UUID=14D82C19D82BF81E_example /mnt/data_mounted    auto nosuid,nodev,nofail,x-gvfs-show 0 0

Then we have to simply execute to mount as per our guidelines:

sudo mount -a

Always remember to unmount your external storeges safely with:

sudo umount /my_volume

Option 2: Another option would be to set a cron task with:

@reboot mount /dev/sdb1 /mnt/data_mounted/ #example

1. TLP: TLP is an advanced power management tool that optimizes battery life on laptops and power usage on desktops. It comes with default settings tailored for saving power and can be customized according to your needs.

   • Install TLP using the following command:

     sudo apt install tlp tlp-rdw
   • After installation, TLP will start automatically. However, you can start it manually and enable it to start at boot with:

     sudo tlp start

2. cpufrequtils or cpupower: These tools allow you to adjust the CPU frequency scaling and governor settings. The CPU governor controls the scaling of the CPU frequency according to the current load, allowing you to balance between performance and power consumption.

   • Install cpufrequtils with:

     sudo apt install cpufrequtils
   • Or, for more recent versions of Ubuntu, cpupower might be available:

     sudo apt install linux-cpupower
   • You can then set the CPU governor to a power-saving mode, like powersave, using:

     sudo cpufreq-set -r -g powersave

3. Powertop: Powertop is a tool developed by Intel that shows you the power consumption of your device and suggests optimizations to reduce power usage.

   • Install Powertop with:

     sudo apt install powertop
   • To see the current power usage and suggestions, run:

     sudo powertop
   • Powertop can also automatically apply its optimization suggestions at startup by creating a service or script that runs powertop --auto-tune.

4. Auto-cpufreq: This tool automatically adjusts CPU frequency and power modes in real-time based on system load and power source. It’s useful for those who prefer a more “set it and forget it” approach.

   • Since Auto-cpufreq isn’t available directly from the standard Ubuntu repositories, it can be installed via a snap or its GitHub repository. To install it using snap, use:

     sudo snap install auto-cpufreq
   • To monitor and automatically adjust the CPU settings, you may need to run it with:

     sudo auto-cpufreq --live
   • To enable persistent changes, consider installing it as a service through its GitHub instructions.

Install TMUX with:

apt install tmux
#tmux #CTRL+B CTRL+D to detacht and CTRL+A to attach again

https://tmuxcheatsheet.com/

sudo add-apt-repository ppa:oguzhaninan/stacer
sudo apt-get update
sudo apt-get install stacer
#stacer

https://tmuxcheatsheet.com/

You can check your raspberry IPV6 with:

ifconfig

#https://snapcraft.io/install/sosumi/ubuntu
sudo snap install sosumi

#CTRL+ALT+G #to get out of the VM


#sudo snap remove sosumi

Interested in VMs? Check this out.

Save and restores only used blocks in a hard drive with Clonezilla

apt update
apt install clonezilla

You can also download the ISO, boot clonezilla from usb and select: device to device

Be carefull with the options you choose (source device, destination…)

Install it with FlatPak:

Install RustDesk with Flatpak:

sudo apt install flatpak
flatpak --version
#flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

wget https://github.com/rustdesk/rustdesk/releases/download/1.2.3-1/rustdesk-1.2.3-x86_64.flatpak
flatpak install rustdesk-1.2.3-x86_64.flatpak

flatpak run com.rustdesk.RustDesk

Lets edit this file:

nano ~/.bash_aliases

Add this line to know your public ip address by typing myip on the terminal:

alias myip='curl ipinfo.io/ip' #public ip address

Use this command to be able to use the new alias already in the current session

source ~/.bashrc

Have a look to Fish Shell:

sudo apt install fish
#fish -v

fish #use it
#chsh -s $(which fish) #make it default

Or Tabby:

wget https://github.com/Eugeny/tabby/releases/download/v1.0.205/tabby-1.0.205-linux-x64.deb
sudo dpkg -i tabby-1.0.205-linux-x64.deb
sudo apt-get install -f