Git - clean up git branches in my local repository (git remove all local branches except master)

How to clean up git branches in my local repository?
I am interested in cleaning up local repo, this are my requirements after cleanup:
- remove all local branches except master
- get all remote branches (refresh local list of remote branches)

Current state on remote repo:

xxxxxxxxxx

master

remote_branch_2

remote_branch_5

Before in local repo:

xxxxxxxxxx

master

local_branch_1

local_branch_2

local_branch_3

remote_branch_1

remote_branch_2

remote_branch_3

remote_branch_4

After in local repo (same state as on remote repo):

xxxxxxxxxx

master

remote_branch_2

remote_branch_5

Is it possible to achieve it in 1 command line?
If not the easiest way to do it?

1 liner cmd - ensure you are on MASTER branch

xxxxxxxxxx

git branch | grep -v "master" | xargs git branch -D && git remote update --prune

Above line will do exactly what you described in question.

Explanation:
Current state on remote repo:

xxxxxxxxxx

master

remote_branch_2

remote_branch_5

First command
git remove all local branches except master

xxxxxxxxxx

git branch | grep -v "master" | xargs git branch -D

After this command local repo will looks:

xxxxxxxxxx

master

remote_branch_1

remote_branch_2

remote_branch_3

remote_branch_4

Second command
git get all remote branches and refresh list in local repo of remote branches

xxxxxxxxxx

git remote update --prune

After this command local repo will looks:

xxxxxxxxxx

master

remote_branch_2

remote_branch_5

1. Git branch - docs
2. Git remote - docs
3. xargs - linux docs

• Git - remove all local branches that are not master branch