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# Nemo

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- Cinnamon
- File manager functionality
- GNOME Files
- Thunar
- PCManFM

Nemo is a fork of GNOME Files (formerly known as Nautilus). It is also the default file manager of the Cinnamon desktop. Nemo is based on the Files 3.4 code. It was created as a response to the changes in Files 3.6 which saw features such as type ahead find and split pane view removed.

## Installation

Install the nemo package.

### Extensions

Some programs can add extra functionality to Nemo. Here are a few packages that do just that:

- Gloobus Sushi — Provides a previewer service for Nemo.

  https://launchpad.net/gloobus-preview || gloobus-preview

- Nemo File Roller — File archiver extension for Nemo.

  https://github.com/linuxmint/nemo-extensions/tree/master/nemo-fileroller || nemo-fileroller

- Nemo Compare — An utility which compares two files using meld.

  https://github.com/linuxmint/nemo-extensions/tree/master/nemo-compare || nemo-compare

- Nemo Preview — GtkClutter and Javascript-based quick previewer for Nemo.

  https://github.com/linuxmint/nemo-extensions/tree/master/nemo-preview || nemo-previewAUR

- Nemo Seahorse — PGP encryption and signing extension for Nemo.

  https://github.com/linuxmint/nemo-extensions/tree/master/nemo-seahorse || nemo-seahorseAUR

- Nemo Share — Samba extension for Nemo.

  https://github.com/linuxmint/nemo-extensions/tree/master/nemo-share || nemo-share

- Nemo Terminal — Embedded terminal window for Nemo

  https://github.com/linuxmint/nemo-extensions/tree/master/nemo-terminal || nemo-terminal

- RabbitVCS Nemo — Integrate RabbitVCS into Nemo.

  http://www.rabbitvcs.org/ || rabbitvcs-nemoAUR

See AUR and nemo-extensions github repo for all extensions.

## Configuration

Nemo is simple to configure graphically but not all options are in the preferences screen in Nemo. More options are available in the dconf-editor under `org.nemo`.

### Set Nemo as default file browser

To set Nemo as the default file browser, execute the following:

    $ xdg-mime default nemo.desktop inode/directory application/x-gnome-saved-search

### Show / hide desktop icons

To enable/disable desktop icons rendering feature in nemo, change the following setting true or false (false to hide, true to show):

    $ gsettings set org.nemo.desktop show-desktop-icons false

This fixes the console warning `WARNING **: Can not determine workarea, guessing at layout` for tiling window managers (such as i3).

### Change the default terminal emulator for Nemo

gnome-terminal is set as the default, if it is not installed, neither the "Open in terminal" context menu entry feature will not work, nor shell scripts or terminal applications will not run from Nemo.

You can change the default setting with `gsettings` to the preferred terminal application.

    $ gsettings set org.cinnamon.desktop.default-applications.terminal exec terminal-name

To be able to run shell scripts from Nemo, make sure you set up the proper argument for the preferred terminal application (the default is `-x` for gnome-terminal).

    $ gsettings set org.cinnamon.desktop.default-applications.terminal exec-arg argument

### Set keyboard shortcut for "Open in terminal"

If you want to edit keyboard shortcuts, you need first to change /org/cinnamon/desktop/interface/can-change-accels respectively /org/gnome/desktop/interface/can-change-accels if you are using Gnome desktop. You can do that with dconf-editor or with this code in terminal:

    $ gsettings set org.cinnamon.desktop.interface can-change-accels true

or for Gnome:

    $ gsettings set org.gnome.desktop.interface can-change-accels true

Edit or create `~/.gnome2/accels/nemo` and add the following line (replacing "F4" with the desired key combination):

    ~/.gnome2/accels/nemo

    (gtk_accel_path "<Actions>/DirViewActions/OpenInTerminal" "F4")

`<Alt>`, `<Primary>`, and `<Shift>` can be used as key modifiers (for example, `<Primary><Shift>t`).

### Set bookmarks

The bookmarks can be configured in `~/.config/gtk-3.0/bookmarks`

    ~/.config/gtk-3.0/bookmarks

    file:///mnt/drive drive
    file:///mnt/games games
    file:///home/user/Documents/My%20Games My Games

## Tips and tricks

### Nemo Actions

Nemo allows the user to add new entries to the context menu. The file `/usr/share/nemo/actions/sample.nemo_action` contains an example of a Nemo action. Directories to place custom action files:

- `/usr/share/nemo/actions/` for system-wide actions
- `~/.local/share/nemo/actions/` for user actions

Action files must have the `.nemo_action` file extension.

#### Clam Scan

    clamscan.nemo_action

    [Nemo Action]
    Name=Clam Scan
    Comment=Clam Scan

    Exec=gnome-terminal -x sh -c "clamscan -r %F | less"

    Icon-Name=bug-buddy

    Selection=Any

    Extensions=dir;exe;dll;zip;gz;7z;rar;

#### Moving files

    archive.nemo_action

    [Nemo Action]
    Active=true
    Name=Archive %N
    Comment=Archiving %N will add .archive to the object.
    Exec=<archive.py %F>
    Selection=S
    Extensions=any;

    archive.py

    #! /usr/bin/python2 -OOt
    import sys
    import os
    import shutil

    filename = sys.argv[0]
    print "Running " + filename
    print "With the following arguments:"
    for arg in sys.argv:
        if filename == arg:
            continue
        else:
            print arg
            #os.rename('%s','%s.archive') % (arg,arg)
            shutil.move(arg, arg+".archive")

#### Meld compare

    compare-save-for-later.nemo_action

    [Nemo Action]
    Active=true
    Name=Compare later
    Comment=Save file for comparison later.
    Exec=<compare.sh save %F>
    Icon-Name=meld
    Selection=S
    Extensions=any

    compare-with-saved.nemo_action

    [Nemo Action]
    Active=true
    Name=Compare with saved element
    Comment=Compare %F saved file or directory.
    Exec=<compare.sh compare %F>
    Icon-Name=meld
    Selection=S
    Extensions=any

    compare.sh

    #!/bin/bash
    savedfile=/var/tmp/compare-save-for-later.$USER
    comparator=meld
    if [ "$1" == "save" ]; then
    	shift
    	echo "$*" > "$savedfile"
    elif [ "$1" == "compare" ]; then
    	shift
    	"$comparator" "$*" "$(cat $savedfile)"
    fi

#### Filenames containing spaces

By default, Nemo does not escape filenames. This means that actions for multiple files with some names containing spaces are broken. To fix this, use `Quote=double`.

### Network Shares / Virtual Filesystems

By installing gvfs and the various `gvfs-*` packages, you can add support for various network based filesystems (e.g. SMB, NFS, WebDAV, Nextcloud) and some mobile phones (Android MTP, Apple AFC).

For more information and other supported virtual filesystems, see File manager functionality.

## Troubleshooting

### Thumbnail generation errors shown in the console

By default, nemo does not generate thumbnails for certain video files due to licensing or patent problems (AVC encoded mp4 and mkv files for example). As such, you might see errors similar to the following in the console:

    CinnamonDesktop-WARNING **: Error creating thumbnail for file:///home/username/video.mp4: Unrecognized image file format

for mp4 and other video files.

To fix this, ensure that you have a thumbnailer for video files installed—see File manager functionality#Thumbnail previews—and also ensure you have the necessary GStreamer packages installed that will allow the video file to be played.

Tip Once thumbnail generation for video files is working, you can use `nemo-preview` to preview video files.

### Desktop icons not shown

Since Nemo v3.4.2, the desktop is managed by nemo-desktop. This can be configured to auto start by copying the file `/usr/share/applications/nemo-autostart.desktop` to `~/.config/autostart/nemo-autostart.desktop` and removing the line `OnlyShowIn=X-Cinnamon;`.

### (GNOME) Opening a single file opens all files

Nemo was changed since v5.0.1 to allow the sort order to be maintained when passing multiple files to the image viewer. There is also a new GNOME setting to enable or disable it.

To fix this, run:

    $ gsettings set org.nemo.preferences image-viewers-with-external-sort "[]"

See https://github.com/linuxmint/nemo/issues/2771 for more information.

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