# File Management
The file browser and File menu enable you to work with files and
directories on your system. This includes opening, creating, deleting,
renaming, downloading, copying, and sharing files and directories.
The file browser is in the left sidebar Files tab:
Many actions on files can also be carried out in the File menu:
(open-file)=
## Open file
To open any file, double-click on its name in the file browser:
(newtab)=
## New tab
You can also drag a file into the main work area to create a new tab:
(multiple-viewers)=
## Multiple Viewers
Many files types have [multiple viewers/editors](file-and-output-formats).
For example, you can open a Markdown file in a [text editor](file-editor) or as rendered HTML.
A JupyterLab extension can also add new viewers/editors for files.
To open a file in a non-default viewer/editor, right-click on its name in the
file browser and use the "Open With..." submenu to select the viewer/editor:
(single-doc-sync)=
## Single Doc Sync
A single file can be open simultaneously in multiple viewer/editors and
they will remain in sync:
(file-navigation)=
## File Navigation
The file system can be navigated by double-clicking on folders in the
listing or clicking on the folders at the top of the directory listing:
(file-share)=
## Share file
Right-click on a file or directory and select "Copy Shareable Link" to
copy a URL that can be used to open JupyterLab with that file or
directory open.
(file-copy-path)=
## Copy File Path
Right-click on a file or directory and select "Copy Path" to copy the
filesystem relative path. This can be used for passing arguments to open
files in functions called in various kernels.
## Important folders
While working in Notebooks, it is important to keep in mind the folder
structure. After launching Polus Notebook JupyterLab server, you will
see two folders in the file browser on the left: `shared` and
`work`.
- `shared` folder is the symbolic link to `/opt/shared`, which is
reserved for shared storage across all apps. You may find the
following folders inside of `shared`:
- `notebooks` is the shared folder for all users of notebooks
across the deployemnt. That allows to store common notebooks, code
and datasets and collaborate on them with other users of Notebooks
- `compute` (if Polus Compute is enabled on your cluster) contains
file storage for Compute API. You may upload datasets and use them
from both Compute and Notebooks
- `work` is the users’ persistent storage. All files in that folder
will persist the notebook restarts and is the place to keep your
work.
All the files and folders created outside of `shared` and `work`
will be deleted on notebook restart, which happen after a period of
inactivity (usually 10 hours).
## File uploads
To upload a file, click on the upload button in file panel on the left:
You can upload multiple files, but you cannot upload folders. Workaround
for uploading folders is to use Git integration or creating archive and
uploading it and later unarchiving.
## File downloads
To download file, right-click on it in the Files panel on the left
You can not download multiple files at once. You can not download
folders. As a workaround, put your files/folders to archive and then
download archive.
## Deleting folders
To protect users from accidentaly deleting the folder, JupyterLab made a
decision to block non-empty folder deletion with right-click
(https://github.com/jupyterlab/jupyterlab/issues/835). Unfortunately,
until the issue is fixed, you would have to delete everything from
inside the folder manually _or_ use the Termianl to delete the folder.
In Terminal you can run the command: `rm -rf ` to delete
the folder.