Replace 4 spaces indentation by 2 spaces indentation in vi/vim

:%s/[ ]\{4\}/  /g

Run tree command respecting .gitignore

My .vimrc for google (and amazon) cloud shell

Will keep here what I am using in google (and amazon) cloud shells.

" keep all defaults
source $VIMRUNTIME/defaults.vim
" disable visual mode when using mouse
set mouse=c
" keep all defaults
source $VIMRUNTIME/defaults.vim
" disable visual mode when using mouse
set mouse=c
" paste as copied
set paste
" indentation
set tabstop=2        " Set the width of a tab character to 2 spaces
set shiftwidth=2     " Set the number of spaces to use for each step of (auto)indent
set expandtab        " Convert tabs to spaces
set softtabstop=2    " Set the number of spaces a Tab counts for while performing editing operations, like inserting a Tab or using BS
set smartindent      " Enable smart indenting for new lines

Sharing code without using git

Sometimes you do not want to commit to git for security reasons and yet you want to test your code somewhere else.
Run the below from your local copy of the git repository:

rsync -av --exclude-from='.gitignore' --exclude='.git' . ~/Downloads/my-repo-copy
cd ~/Downloads/my-repo-copy
zip -r ~/Downloads/my-repo-copy.zip ./

Copy the content to the remote location and run the below:

mkdir my-repo
mv my-repo-copy.zip my-repo/
cd my-repo
unzip my-repo-copy.zip
rm my-repo-copy.zip