What does the option " -q" in git cli and this command do? - linux

Question

I'm learning for Machine Learning and I'm analyzing about Siam Mask Tutorial in google colab.
I saw the code "-q", I don't know what the code means.
I looked it up but couldn't find it.
I'd be very grateful if you could help me.
I think that the code is one of Linux command option
!git clone -q --depth 1 {git_repo_url}
!sed -i "/torch/d" {project_name}/requirements.txt
!cd {project_name} && pip install -q -r requirements.txt
!cd {project_name} && bash make.sh
!pip install -q youtube-dl

Answer 1

The code is not about machine learning but clones a repository managed by the version control system git.
Git clone's help page tell you the -q option switches to quiet, as in non-verbous, command line output.
git clone -?
usage: git clone [<options>] [--] <repo> [<dir>]
-v, --verbose be more verbose
-q, --quiet be more quiet
--progress force progress reporting
-n, --no-checkout don't create a checkout
--bare create a bare repository
--mirror create a mirror repository (implies bare)
-l, --local to clone from a local repository
[...]
The second -q option in your example refers to pip becoming quit(er), as in less verbose, by reducing the loglevel with each q you add as a parameter (max. 3 are possible). This can be found by calling `pip install --help``` on your console. Excerpt:
-q, --quiet Give less output. Option is additive, and can be used up to 3 times (corresponding to WARNING, ERROR, and CRITICAL logging levels).
So, line by line your bash commands do the following:
clone repository to current prompt from {git_repo_url}
string operation in requirements.txt for dependency correction
change prompt to project directory and install all python dependencies of the project
change prompt to project directory and run the make script
install python package quietly
Generally for future reference: If you are unsure about what a command does, try using only that command with no parameters plus any variation of -?, -h or --help. On most unixoide shells this gives you a pretty helpful page of the command's purpose and all (or most) of its possible parameters. Make it a habit of always referring to this first, this is literally the developers themselves teaching you how to use their software.