Linux Commands

Get Modems Serial Port #

This finds the tty port for the modem by trying to find the irq used by the modem and then looking it up in either dmesg or /proc/tty/driver/serial

Normal User

 dmesg | grep "irq = `lspci  | grep Communication | awk '{print $1}' | xargs -n1 -i lspci -v -s {} | grep IRQ | awk -FIRQ\  '{print $2}'`"

Root

 lspci  | grep Communication | awk '{print $1}' | xargs -n1 -i lspci -v -s {} | grep IRQ | awk -FIRQ\  '{print $2}' | xargs -n1 -i grep {} /proc/tty/driver/serial

Setup Power Management for Monitor

• Edit /etc/X11/xorg.conf
• Add the following to the "ServerLayout" section:

   Option         "BlankTime"     "3"
   Option         "StandbyTime"   "0"
   Option         "SuspendTime"   "0"
   Option         "OffTime"       "4"

• Add the following to the "Monitor" section:

   Option         "DPMS"

Power off Monitor

 xset dpms force off

Control Volume from CLI

This is useful for setting the volume for alarms in a bash script / command line.
Syntax: amixer sset Master,0 <LEFT%>,<RIGHT%>

 amixer sset Master,0 unmute
 amixer sset Master,0 100%,100%

Get Info on System Hardware from BIOS

Dmidecode reports information about your system's hardware as described in your system BIOS according to the SMBIOS/DMI standard.

 dmidecode