-d, --defaults

Print a default rc file

-f, --file

Use an alternative rc file

-h, --help

Short help on options plus version/author info.

-X, --display

Set X display to use

-v, --verbose

More information on xbindkeys when it run

-k, --key

Identify one key pressed (useful to fill the configuration file)

-mk, --multikey

Idenfify multi key pressed (useful to fill the configuration file)

-g, --geometry

size and position of window with -k|-mk option

-n, --nodaemon

don't start as daemon

If guile support have not been disabled:

-dg, --defaults-guile

Print a default guile configuration file

-fg, --file-guile

Use an alternative guile configuration file

The configuration file consists of commands names in double quotes, and associated keys in the next line.

Comments are started with a pound (#) and extend to the end of the line.

You can see a default file with the --defaults option or create a default $HOME/.xbindkeysrc with

 'xbindkeys --defaults > $HOME/.xbindkeysrc'.

The format of a command line is:

    "command to start &"
       associated key

To specify an associated key, you can use 'xbindkeys --key' or
 'xbindkeys --multikey' and put one of the two lines in the
configuration file.

A list of keys is in /usr/include/X11/keysym.h and in
/usr/include/X11/keysymdef.h.
The XK_ is not needed.

List of modifier:
    Release, Control, Shift, Mod1 (Alt), Mod2 (NumLock),
    Mod3 (CapsLock), Mod4, Mod5 (Scroll).

The release modifier is not a standard X modifier, but you can
use it if you want to catch release events instead of press events.

By defaults, xbindkeys does not pay attention with the modifiers
NumLock, CapsLock and ScrollLock.
Add the lines above in the configuration file, if you want to pay
attention to them.

    keystate_numlock = enable
    keystate_capslock = enable
    keystate_scrolllock= enable

# control+shift+d starts an xterm (it's a comment)

"xterm"
  control+shift + q

# Menu key starts xbindkeys_show
"xbindkeys_show"
  Menu

# Control + mouse button 1 starts an xterm
"xterm"
  Control + b:1

# Control+Shift+a  release event starts rxvt
"rxvt"
  release+control+shift + a

# Control + mouse button 2 release event starts rxvt
"rxvt"
  Control + b:2 + Release

The defaults is ~/.xbindkeysrc.scm

Use xbindkeys --defaults-guile for more details.

And xbindkeys --defaults-guile > ~/.xbindkeysrc.scm to use this methode.

killall -HUP xbindkeys

When HUP signal is send to xbindkeys, changes in $HOME/.xbindkeysrc takes effect only after moving mouse.