This article illustrates how to install Shell In A Box on your CORE9G25 Board to have access to Linux command line from the web interface.

Shell In A Box is a program create by Markus Gutschke that implements an in-browser command line shell. It works on any JavaScript and CSS enabled web browser.

Installing it on your Linux board you can get the access to the command prompt directly from web without any needs to install terminal software on your PC.

Installing Shell In A Box

From the CORE9G25 board command line install the shellinabox debian package by typing:

~# apt-get update
~# apt-get install shellinabox 

When finished edit the file /etc/default/shellinabox by changing this line:

SHELLINABOX_ARGS="-s/:LOGIN -t --no-beep"

then restart the Shell In A Box daemon typing:

~# /etc/init.d/shellinabox restart

Create an user for the first login:

~# adduser acme
...

Open your browser on http://board_ip_address:4200 and see the prompt Login via web.

Use the CORE9G25 user to login and then if you need root privileges change to root by typing:

~# su
...

Access the command shell using the stardard web port 80

Lighttpd web server installed by default on the CORE9G25 board can be configured to provide a proxy service to route a web request on a specific url to another port.

For example we can open the Shell using this url: http://board_ip_address/shell instead of http://board_ip_address:4200.

Add in /etc/lighttpd/lighttpd.conf file the item "mod_proxy" in the server.modules section:

server.modules = (
    "mod_access",
    "mod_alias",
    "mod_accesslog",
    "mod_compress",
    "mod_redirect",
    "mod_proxy"
)

Add at the end of /etc/lighttpd/lighttpd.conf this lines:

proxy.server = ( 
    "/shell" => 
    ( ( 
        "host" => "127.0.0.1",
        "port" => 4200
    ) )
)

Now restart the web server by typing:

~# /etc/init.d/lighttpd restart

And access with your browser to the new url: http://board_ip_address/shell.

 Change the shell CSS style

SHELLINABOX_ARGS="-s/:LOGIN -t --no-beep"

SHELLINABOX_ARGS="-s/:LOGIN -t  --no-beep --static-file=styles.css:/etc/shellinabox/shellinabox.css"

~# /etc/init.d/shellinabox restart

Related links

• Shell In A Box web site