How to download and setup icon-shelf
Open terminal and run command
                                            git clone https://github.com/Icon-Shelf/icon-shelf.git
                                        
                                        git clone is used to create a copy or clone of icon-shelf repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with icon-shelf https://github.com/Icon-Shelf/icon-shelf/archive/master.zip
Or simply clone icon-shelf with SSH
                                            [email protected]:Icon-Shelf/icon-shelf.git                                    
                                    If you have some problems with icon-shelf
You may open issue on icon-shelf support forum (system) here: https://github.com/Icon-Shelf/icon-shelf/issuesSimilar to icon-shelf repositories
Here you may see icon-shelf alternatives and analogs
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