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EM Command
| Command | Description |
|---|---|
| em –help | gives all commands. |
| fdisk - l | finds a disk |
sfdisk | lists all disks (including boot disk) eg /dev/sda and /dev/sdb
em installem /dev/sdb 2.2.2 | Boots from install disk. Sdb needs to be os disk, will be 30gb. 2.2.2 needs to be most recent version of software.
em stop | stops em processors, do this before updating software.
em resetgps | command for setting up GPS after first time plugged in.
em format /dev/sda 111 | Formatting a new disk for use. 111 is number to give to disk
systemct1 restart em-rec.service | reboots system without turning off.
Ctrl alt f1 | closes the user interface
Ctrl alt f2 | opens user interface
Ctrl alt backspace | RESETS EM sensors from inside user interface
vi /var/em/em.conf | opens setup file for boat name etc.. Use i to edit.
:wq | saves changes to above file
cd /mnt | Change directory
mkdir usb | make a directory (in this case called usb)
mount /dev/sdc1 usb | make the new directory link to usb
cd usb | change directory to usb.
em flashard 5V | to update the Arduino, where 5V is the arduino type.
ping 1.1.1.1 | checks cam connection to network (change IP address as necessary).
ls /var/em/data/video | Shows which video is been recorded. Need to get into correct directory, starts in root.
cd /var | changes directory to, var = raw data, been recorded to this. Mnt = removable drive, may take a little longer for data to be recorded here.
ls –l | Brings up list of files.
Type command + head –n 10 | brings up first 10 lines of list.