Erlang集群管理系统中遇到的一些小问题
erlang节点之间的文件传输
# file:read_file/write_file
XML解析
# xmerl
Erlang中字符串的处理
# string
# io_lib
# re
# lists
when I start erl in the terminal as root, there is a warning:
'no display name and no $DISPLAY environment variable'.
# export DISPLAY=:0.0
1> tv:start().
<0.34.0>
2> No protocol specified
Application initialization failed: couldn't connect to display ":0"
No protocol specified
Error in startup script: couldn't connect to display ":0"
while executing
"load /usr/lib/libtk8.4.so.0 Tk"
("package ifneeded" script)
invoked from within
"package require Tk 8.3"
(file "/usr/local/lib/erlang/lib/gs-1.5.11/priv/gstk.tcl" line 7)
Try merging Xauthority file first:
> sudo xauth -f /root/.Xauthority merge .Xauthority
Now you can run gui as root
> sudo gui
