Feh – Image viewer and Cataloguer
feh is a light-weight, configurable and versatile image viewer. It is aimed at command line users, but can also be started from graphical file managers. Apart from viewing images, it can compile text and thumbnail listings, show (un)loadable files, set X11 backgrounds, and more.
Features include filelists, various image sorting modes, custom action scripts, and image captions. feh can be controlled by configurable keyboard and mouse shortcuts, terminal input and signals. When no file arguments or filelists are specified, feh displays all files in the current directory.
- libcurl (disable with make curl=0)
- libXinerama (disable with make xinerama=0)
If built with exif=1:
- convert (supplied by ImageMagick, can be used to load image formats not supported by Imlib2)
For end users:
$ make $ sudo make install app=1
For package maintainers and users who do not want feh to install its icons into /usr/share:
$ make $ sudo make install
Explanation: feh ships some icons and an X11 desktop entry, which allow it to be used from file managers, desktop menus and similar. However, installing icons to /usr/local/share/... does not seem to work reliably. Because of this, when using "make install app=1", feh will install its icons to /usr/share/..., even though they technically belong into /usr/local.
ZSH completion for feh is also available.
feh's build process uses make flags to enable/disable optional features and fine-tune the build and installation process. They can be passed as make arguments or set as environment variables, like so:
make flag=bool make install flag=bool
export flag=bool make && make install
The following flags are respected by the makefile. A default value of 1 indicates that the corresponding feature is enabled by default.
|app||0||install icons to /usr/share, regardless of
|curl||1||use libcurl to view https:// and similar images|
|debug||0||debug build, enables
|exif||0||Builtin EXIF tag display support|
|help||0||include help text (refers to the manpage otherwise)|
|inotify||0||enable inotify, needed for
|stat64||0||Support CIFS shares from 64bit hosts on 32bit machines|
|verscmp||1||Whether your libc provides
|xinerama||1||Support Xinerama/XRandR multiscreen setups|
make xinerama=0 debug=1 will disable Xinerama support and
produce a debug build; libcurl and natural sorting support will remain enabled.
Additionally, the standard variables
DESTDIR are supported.
PREFIX (default: /usr/local) controls where the application and its data files
will be installed. It must be set both during
DESTDIR (default: empty) sets the installation root during "make install". It is mostly useful for package maintainers.
Note: Defaults are specified in
config.mk. It is designed so that in most
cases, you can set environment variables instead of editing it. E.g.:
CFLAGS='-g -Os' make
export DESTDIR=/tmp/feh PREFIX=/usr make && make install
Builtin EXIF support is maintained by Dennis Real, here.
The non-X11 parts of feh can be automatically tested by running
$ make test
This requires perl >= 5.10 and the perl module
Test::Command. Tests are
non-interactive and do not require a running X11, so they can safely be run on
a headless buildserver.
Bugfixes are always welcome, just open a pull request :)
Before proposing a new feature, please consider the scope of feh: It is an image viewer and cataloguer, not an image editor or similar. Also, its option list is already pretty long. Please discuss your ideas in a feature request before opening a pull request in this case.
Please keep in mind that feh's options, key bindings and format specifiers are documented in two different places: The manual (man/feh.pre) and the help text (src/help.raw). Although the help is not compiled in by default, it should be kept up-to-date. On space-constrained embedded systems, it may be more useful than the (significantly larger) man page.