Check out Xournal++. It supports inserting images in the notebook (click on the image icon in the toolbar), and changing their size.
It further supports annotating with mouse, text input from keyboard (including LATEX), and input from Wacom tablets.
To install its latest stable version in supported version of Ubuntu, use the following commands. The PPA ...
Another GUI application for rsync is luckyBackup.
It is available in the default Debian / Ubuntu repositories.
Therefore, you could install it by
sudo apt-get install luckybackup
It is useful particularly if you are looking to use rsync for backing up files.
Since the temperature appears as file (/sys/class/thermal/thermal_zone0/temp) in Linux system, we could find out the answer by reading a file. To find the temperature purely by shell script:
Run the command: touch get_temperature.sh to make a new empty file;
Type the following code below:
Open GNOME "Calculator".
Enter the following as input: nCr(n;r)=n!÷r!÷(n−r)! (I recommend to copy and paste the code I provided.)
You have now defined a new function with name nCr.
You can use it like any predefined "Calculator" function. For example enter: nCr(4;2) to get the output of 6.
As of summer 2020, the updated fork of diffuse at https://github.com/MightyCreak/diffuse is the best way to go. It is very usable directly from source on Ubuntu 20.04. The main prerequisites are python3 and python3-gi, both of which are new enough on Ubuntu 20.04. Install python3 and python3-gi with
sudo apt install python3-gi
On non-desktop machines, you ...
You can utilize a bash script to solve your second problem, here's the logic:
Check battery percentage every x seconds/minutes (you can use a cron job for that)
If the battery is less than say 50% the script would run: xbacklight -set 70
If the battery is less than 10% the script would run: xbacklight -set 20
clight is a daemon that utilizes your webcam ...