Caja is the MATE file manager, based on Nautilus 2.32.


  • caja-gksu
  • caja-image-converter
  • caja-open-terminal
  • caja-sendto
  • caja-share



Caja and gdb

ps aux | grep caja
gdb caja <caja pid>

Enable debug log

Caja has a debug logging infrastructure that come from Nautilus1). If Caja crashes, it will write a ~/caja-debug-log.txt file which you can attach to a bug report. This file contains a log of your last actions, and additional information which may be useful to debug the problem. You can also send a SIGUSR1 to Caja to cause it to write the debug log to disk immediately.

A developer may ask you to set up a ~/caja-debug-log.conf file with this format:

[debug log]
max lines = 1000
enable domains = <list of log domains separated by ";">

The available log domains are these:

  • async - to debug asynchronous notifications
  • GLog - only used to get g_debug() messages included in the log; they are excluded by default. Other GLog output is included as it usually consists of important messages.

Caja internals

This section is a fork of Nautilus development page.

|-- ChangeLog                      # what happend (also see svn log)
|-- INSTALL                        # installation instructions
|-- MAINTAINERS                    # the people working on Caja
|-- docs
|   |-- caja-internals.pdf         # some very old documentation
|-- eel                            # the eel library of helper functions
|-- libcaja-extension              # the public API, exposed to the outside world
|   |-- caja-file-info.c           # exposes Caja's private code-file.c
|-- libcaja-private                # this is Caja's internals, never exposed
|   |-- caja-file.c                # one of the most important files
|-- po                             # translation files
|-- src                            # main source, lots of dialogs etc.
|   |-- caja-main.c                # main
|   |-- file-manager               # file manager views and dialogs
|       |-- fm-directory-view.c    # base class for directory views
|       |-- fm-icon-view.c         # icon view
|       |-- fm-list-view.c         # list view
|       |-- fm-properties-window.c # file properties dialog
|-- test                           # tests


network & samba share

Caja requires `gvfs-backends` to open the “Network” folder and explore samba share.

apt-get install gvfs-backends

Hiding partition in Caja ''Devices''.

Modern computers are equiped with sata or scsi controller and drives which support hotplugging. This means that for every hotpluggable disk it's partitions will show under the devices section in the Caja side-pane. Caja does not govern this and instead asks Udisks2 which partitions to display in Devices.

There are situation where you do not want partitions to show in the devices and just want to hide them. In order to do this we need to tell Udisks2 to ignore the partition. This is done through setting a udev value for that partition. The value is UDISKS_IGNORE.

Create the following file in /etc/udev/rules.d/.

ACTION!="add|change", GOTO="hide_partition_end"
SUBSYSTEM!="block", GOTO="hide_partition_end"
KERNEL=="loop*|ram*", GOTO="hide_partition_end"

Where it says 'sdXX' put your device that has the partiton. You can repeat this line multiple time for every partition you want to hide.

On the next reboot the variable will be set and the partition ignored by Udisks2 and therefore not shown in Devices

applications/caja.txt · Last modified: 2013/11/29 12:45 by Stefano Karapetsas
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