Description:

I use this script to start urxvt which takes care of starting one urxvtd daemon and then one urxvtc client per call:

#!/bin/sh

opts='-font xft:PragmataPro:size=11:antialias=true
-letterSpace -1
+scrollBar
-si -sw -sk
-title Terminal
-saveLines 9000000
-perl-ext-common default,matcher
-url-launcher xdg-open
-matcher-button 2
-fade 4
-depth 32'

urxvtc ${opts} "$@"
if [ $? -eq 2 ]; then
urxvtd -q -o -f
urxvtc ${opts} "$@"
fi

This used to work fine but since recently (*) it stops working after 4-8 terminal sessions are open. Then I get "urxvt: can't fork, aborting."

(*) Recently may be not so recently, actually, because I seldomly use more than 4 terminal sessions, so it might have gone unnoticed for some time.

Steps to reproduce:

Call the above script several times until you get the error.