What does the command "cm data connect" do?

elijah · June 23, 2023, 8:06pm

Hi,
I was looking at the Legato cm commands from their website and would like to know what is actually happening when you call “cm data connect” all they say is “Start a data connection.”

Also, what is the difference between “cm data connect” and “cm data connect&”? I have seen that people use “cm data connect&”, but on the legato site it says this is the format for the command:
"cm data connect <optional timeout (secs)> ".
I do not really know what the & does in this case.

Thanks!

jyijyi · June 23, 2023, 9:55pm

You can see the actual script here

github.com

legatoproject/legato-af/blob/master/apps/tools/scripts/cm

#!/bin/sh

################################################################################
#                                                                              #
# cm is a shell script that wraps the cm binary in order to start a data       #
# session based on cellular modem technology. It sets up the last registered   #
# profile preferences, the ip routing table and tests the connection (just a   #
# ping test to see if we can reach the outside world).                         #
#                                                                              #
# For more information type 'cm help'.                                         #
#                                                                              #
# Copyright (C) Sierra Wireless Inc.                                           #
#                                                                              #
################################################################################

CM=${CM:="/legato/systems/current/apps/tools/read-only/bin/cm"}
IP=${IP:="/sbin/ip"}
IFCONFIG=${IFCONFIG:="/sbin/ifconfig"}
RESOLV_CONF=${RESOLV_CONF="/etc/resolv.conf"}
LOG=${LOG:="/var/log/cm"}

This file has been truncated. show original

The “&” means it opened a new shell to run the “cm data connect”, as a result, you can still enter command after “cm data connect &”.

elijah · June 27, 2023, 4:59pm

Thanks @jyijyi, I appreciate it.

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What does the command "cm data connect" do?

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