GitKraken is the best GUI for linux on working with git. It free only for non-commercial use. No other GUI clients for linux match this as of writing this answer.

You should consider taking a look once.

**printf** will do this for you, from shell.
*** $ FOO=42.53e-12
$ BAR=$(printf "%.14f" $FOO)
$ echo $BAR
0.00000000004253
$***

In ancient+arcane C-shell, this would be.
***$ set FOO=42.53e-12
$ set BAR=`printf "%.14f" $FOO`
$ echo $BAR
0.00000000004253
$***

In my case, using ffmpeg directly did the trick and provided the best result:
***$ ffmpeg -f gif -i infile.gif outfile.mp4***

Change your config to match this:
***# /etc/ssmtp/ssmtp.conf
root=youremail@gmx.com
mailhub=mail.gmx.com:587
rewriteDomain=gmx.com
hostname=gmx.com
FromLineOverride=YES
AuthUser=youremail@gmx.com
AuthPass=yourpassword
UseSTARTTLS=YES***

The command syntax you're looking for perhaps is this. ssh -p XXX user@remotehostip You have to change option's order. Try it now, it works for me.

**zsh** stores its prompt setups and defintions in **/usr/share/zsh/functions/Prompts/**
So if you want to take a look what prompt clint does behind the curtains, first find the right file.
***$ ls /usr/share/zsh/functions/Prompts/*clint*
/usr/share/zsh/functions/Prompts/prompt_clint_setup***

And open it in your favorite text editor.

Pulseaudio, or pure ALSA? Pulseaudio is easiest: Create a dummy sink
***pacmd load-module module-null-sink sink_name=tmpsink***

and let program 1 output to it. Program 2 reads from the tmpsink.monitor source. And so on. All this can be scripted. pacmd help shows more commands that may be useful, e.g. list-sink-inputs, list-source-outputs, or move-sink-input and move-sink-output if you can't specify sources and sinks for the programs on the commandline.

Newer versions have an easier command:
***convert -background transparent image.png -define icon:auto-resize=16,32,48,64,256 favicon.ico***

**-background transparent** is of course optional.

If you've booted using the UEFI firmware as opposed to using BIOS firmware then your system should make the EFI NVRAM variables available in:
***/sys/firmware/efi/vars/***
or
***/sys/firmware/efi/efivars/***

When booting using a BIOS (or the BIOS emulation mode of UEFI firmware) then these variables aren't available.

In fact, as @Santropedro pointed out, the path
***/sys/firmware/efi***
is missing when booting using a BIOS, which is easier to check.

To start your VNC viewer without opening the console at all, try [Alt]+[F2] from your desktop environment, which on most will present you with a dialog where you can type in your command to start the viewer without opening a console at all. If it's something you start often, consider setting up a desktop entry file and save it somewhere handy (like your desktop or application menu) with a name like **TightVNC.desktop, eg:**
***[Desktop Entry]
Exec=xtightvncviewer myhost
Name=TightVNC to myhost
Terminal=false
Type=Application***

Alternatively, if you're already at the console you could achieve this with a utility called "screen", which is kind of like a window manager for your console. Start screen with

**$ screen**

Create a new window with [CTRL]+[A], [c] and you'll find yourself back at your shell's prompt. Start your VNC viewer as normal at the prompt, then detach the screen from the current terminal with [CTRL]+[A], [d]. This will drop you back to your shell again, but this time if you leave that session, screen (along with your VNC viewer) will keep running.

Use the following command:
**TZ=GMT date**
The same format:

***TZ=GMT date +"%Y%m%d%H%M%S"
20171225194014***

The entire format string is to be preceded by the **+:**
***$ date +"So this is week: %U"
So this is week: 19
$ date +"So this is week: %U of %Y"
So this is week: 19 of 2016***