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.\" ========================================================================
.\"
.IX Title "urxvt 1"
.TH urxvt 1 "2012-01-21" "9.15" "RXVT-UNICODE"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
urxvtd \- urxvt terminal daemon
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBurxvtd\fR [\-q|\-\-quiet] [\-o|\-\-opendisplay] [\-f|\-\-fork] [\-m|\-\-mlock]
.PP
\&\fBurxvtd\fR \-q \-o \-f    # for .xsession use
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This manpage describes the urxvtd daemon, which is the same vt102
terminal emulator as urxvt, but runs as a daemon that can open
multiple terminal windows within the same process.
.PP
You can run it from your X startup scripts, for example, although it is
not dependent on a working \s-1DISPLAY\s0 and, in fact, can open windows on
multiple X displays on the same time.
.PP
Advantages of running a urxvt daemon include faster creation time
for terminal windows and a lot of saved memory.
.PP
The disadvantage is a possible impact on stability \- if the
main program crashes, all processes in the terminal windows are
terminated. For example, as there is no way to cleanly react to abnormal
connection closes, \f(CW\*(C`xkill\*(C'\fR and server resets/restarts will kill the
\&\fBurxvtd\fR instance including all windows it has opened.
.SH "OPTIONS"
.IX Header "OPTIONS"
\&\fBurxvtd\fR currently understands a few options only. Bundling of
options is not yet supported.
.IP "\fB\-q\fR, \fB\-\-quiet\fR" 4
.IX Item "-q, --quiet"
Normally, \fBurxvtd\fR outputs the message \f(CW\*(C`rxvt\-unicode daemon
listening on <path>\*(C'\fR after binding to its control socket. This option
will suppress this message (errors and warnings will still be logged).
.IP "\fB\-o\fR, \fB\-\-opendisplay\fR" 4
.IX Item "-o, --opendisplay"
This forces \fBurxvtd\fR to open a connection to the current
\&\f(CW$DISPLAY\fR and keep it open.
.Sp
This is useful if you want to bind an instance of \fBurxvtd\fR to
the lifetime of a specific display/server. If the server does a reset,
\&\fBurxvtd\fR will be killed automatically.
.IP "\fB\-f\fR, \fB\-\-fork\fR" 4
.IX Item "-f, --fork"
This makes \fBurxvtd\fR fork after it has bound itself to its control
socket.
.IP "\fB\-m\fR, \fB\-\-mlock\fR" 4
.IX Item "-m, --mlock"
This makes \fBurxvtd\fR call \fImlockall\fR\|(2) on itself. This locks
\&\fBurxvtd\fR in \s-1RAM\s0 and prevents it from being swapped out to disk,
at the cost of consuming a lot more memory on most operating systems.
.Sp
Note: In order to use this feature, your system administrator must have set
your user's \s-1RLIMIT_MEMLOCK\s0 to a size greater than or equal to the size of the
\&\fBurxvtd\fR binary (or to unlimited). See \fI/etc/security/limits.conf\fR.
.Sp
Note 2: There is a known bug in glibc (possibly fixed in 2.8 and later
versions) where calloc returns non-zeroed memory when mlockall is in
effect. If you experience crashes or other odd behaviour while using
\&\-\-mlock, try it without it.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
This is a useful invocation of \fBurxvtd\fR in a \fI.xsession\fR\-style
script:
.PP
.Vb 1
\&   urxvtd \-q \-f \-o
.Ve
.PP
This waits till the control socket is available, opens the current display
and forks into the background. When you log-out, the server is reset and
\&\fBurxvtd\fR is killed.
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
.IP "\fB\s-1RXVT_SOCKET\s0\fR" 4
.IX Item "RXVT_SOCKET"
Both \fBurxvtc\fR and \fBurxvtd\fR use the environment
variable \fI\s-1RXVT_SOCKET\s0\fR to create a listening socket and to contact
the urxvtd, respectively. If the variable is missing then
\&\fI\f(CI$HOME\fI/.urxvt/urxvtd\-\fI<nodename>\fI\fR is used.
.IP "\fB\s-1DISPLAY\s0\fR" 4
.IX Item "DISPLAY"
Only used when the \f(CW\*(C`\-\-opendisplay\*(C'\fR option is specified. Must contain a
valid X display name.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
urxvt(7), urxvtc(1)