OE info Script
This page will explain the standard operations of the /usr/bin/oe_info.sh script, as well as its other capabilities.
Contents
Background
Provided in all EMAC systems is a executable /usr/bin/oe_info.sh that will display various amounts of information ranging from the version of the filesystem to presenting real-time memory utilization.
General Information
The default operation of the script is to provide information about the system. This includes:
- Name of the device
- Device serial number
- Bootstrap
- Bootloader Version
- Kernel version
- Filesystem version
The output of the script will be saved to the text file /etc/oe_info, but only if the file system has been mounted with write permissions. To do this, simply run root@som9x25:~# mount -o remount,rw / before invoking the oe_info script.
The contents of the /etc/oe_info file will be written in, line-by-line, to /www/pages/oe_info.html. This html document is part of the web server provided on all EMAC devices. To access the page, connect the device to a network and determine its IP address. Enter the IP address to a web browser on the same network and you'll be brought to the homepage of the web server. Go to the OE_INFO tab to view the content of /etc/oe_info within the web browser. If there was an error reading from /etc/oe_info, then the webpage will display an empty box.
Here is an example of what the default, no options passed, output of the script looks like:
root@ipac9x25:~# /usr/bin/oe_info.sh ####################################################
####################################################
Gathering build information...
Product: ipac9x25
Serial Number: R078000001
Bootstrap: AT91Bootstrap 3.5.3
Bootloader Part# U-Boot 2014.07emac-standard
Bootloader Ver#: U-Boot 2014.07emac-standard
Kernel Part#: 3.10.0-emac-standard+c0218784c0
Kernel Ver#: 3.10.0-emac-standard+c0218784c0
Filesystem Part#: Standard image
Filesystem Ver#: 5.0.3
####################################################
####################################################
root@ipac9x25:~#
OE Info Script
Usage of the script is as follows:
/usr/bin/oe_info.sh [option]
Only one option will be evaluated and there are no parameters for these options. For example, running root@som9x25:~# /usr/bin/oe_info.sh -cn will only evaluate c as the option. Similarly, root@som9x25:~# /usr/bin/oe_info.sh -c 123 will not account for 123 as a parameter and just execute with the c option. These options are explained in the following section.
Options
The script allows for -c, -f, -h, -m, -n, -v as options and to be only identified by a single dash ('-'). An invalid option or improper amount of dashes will yield an error and display the proper usage with a list of valid options. When an option is given, the script will perform the desired task and then exit. The system information presented when no option given will not be shown and the /www/pages/oe_info.html will not be updated.
-c, CPU Infomation
This will display the number of CPU cores and threads, the chip architecture with the model name, real-time CPU utilization, and CPU clock speed.
root@ipac9x25:~# /usr/bin/oe_info.sh -c CPU info:
BogoMIPS : 198.76
Architecture: ARM, Atmel AT91SAM (Device Tree)
Number of CPUs: 1 core(s)
CPU Utilization: 0.5%
Clock speed: 400 MHz
root@ipac9x25:~#
-f, Flash Information
The -f option will show how much space is used and available on the filesystem and display a list of partitions on the system.
root@ipac9x25:~# /usr/bin/oe_info.sh -fFlash Info:
Filesystem Size Used Available Use% Mounted on
/dev/root 922.7M 71.6M 787.4M 8% /
devtmpfs 60.9M 4.0K 60.9M 0% /dev
/dev/mmcblk0p2 2.5G 4.0M 2.3G 0% /home
tmpfs 61.0M 172.0K 60.9K 0% /run
tmpfs 61.0M 28.0K 61.0M 0% /var/volatile
Partitions:
major minor #blocks name
31 0 16384 mtdblock0
179 0 3694592 mmcblk0
179 1 976600 mmcklk0p1
179 2 2717984 mmcblk0p2
179 16 16384 mmcblk0boot1
179 8 16384 mmcblk0boot0
root@ipac9x25:~# -m, Memory Information
Show the total, used, and free memory of the system.
root@ipac9x25:~# /usr/bin/oe_info.sh -mMemory Info:
Total: 122M
Used: 15M
Free: 82M
root@ipac9x25:~# -n, Network Information
For every site connected to a network, its IP address, netmask, gateway, hostname and MAC address will be displayed.
root@ipac9x25:~# /usr/bin/oe_info.sh -nNetwork Info:
Connection at eth0
IP address: 10.03.146
Netmask: 255.255.0.0
Gateway: 10.0.2.1
Hostname: ipac9x25
MAC address: 40:D8:55:19:DC:C4
Connection at wlan0
IP address: 10.0.4.148
Netmask: 255.255.0.0
Gateway: 10.0.2.1
Hostname: ipac9x25
MAC address: A8:54:B2:42:89:8D
root@ipac9x25:~#
-v, Invoke All Options
The -v option will act as if repeatedly running the script with c, f, m, n options.
root@som9x25:~# /usr/bin/oe_info.sh -vCPU info
BogoMIPS : 198.76
Architecture: ARM, Atmel AT91SAM (Device Tree)
Number of CPUs: 1 core(s)
CPU Utilization: 0.4 %
Clock speed: error reading cpuinfo and dmesg for clock speed
Flash Info:
Filesystem Size Used Available Use% Mounted on
/dev/root 922.7M 71.6M 787.4M 8% /
devtmpfs 60.9M 4.0K 60.9M 0% /dev
/dev/mmcblk0p2 2.5G 4.0M 2.3G 0% /home
tmpfs 61.0M 172.0K 60.9M 0% /run
tmpfs 61.0M 28.0K 61.0M 0% /var/volatile
Partitions:
major minor #blocks name
31 0 16384 mtdblock0
179 0 3694592 mmcblk0
179 1 976600 mmcblk0p1
179 2 2717984 mmcblk0p2
179 16 16384 mmcblk0boot1
179 8 16384 mmcblk0boot0
Memory Info:
Total: 122M
Used: 15M
Free: 82M
Network Info:
Connection at eth0
IP address: 10.0.3.146
Netmask: 255.255.0.0
Gateway: 10.0.2.1
Hostname: ipac9x25
MAC address: 40:D8:55:19:DC:C4
Connection at wlan0
IP address: 10.0.4.148
Netmask: 255.255.0.0
Gateway: 10.0.2.1
Hostname: ipac9x25
MAC address: A8:54:B2:42:89:8D
root@ipac9x25:~# -h, Help
Display the usage of the script and list the options and their descriptions.
root@ipac9x25:~# /usr/bin/oe_info.sh -hUSAGE:
- oe_info.sh [option]
OPTIONS:
- -c show cpu info
- Display number of CPUs, BogoMIPS, chip arhitecture, CPU utilization, and CPU clock speed
- -f flash info
- Shows how much space is used and available on the filesystem and provides a list of
- partitions found int /proc/partitions
- -m show memory info
- Display space used and available in main memory
- -n network info
- -v invoke all options above
- -h display usage and options list
root@ipac9x25:~#
Conclusion
This script is a very useful tool when wanting to know specific information quickly. Instead of looking within the print out of ifconfig to determine the IP address, oe_info.sh can present this information in an easier to read mannor
Further Information
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