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In accordance with the circuit shown in Figure connected after confirmation, click “RESET” button pcDuinoon, the data is coming!

SecureCRT is displayed on the first data is bootloader initialization information pcDuinohardware, bootloader equivalent to the PC BIOS (Basic Input Output System) that is the basic input output system. Bootloader initializes the hardware will start after the completion of the system, as the system initialization is complete:

See ”

Welcome to Linaro 12.07 (GNU / Linux 3.4.29 + armv7l)

* Documentation: https://wiki.linaro.org/

root @ ubuntu: ~ #

“After you pcDuino you can be controlled.

Since commissioning the default is the highest authority, it can operate on any operating system, or even delete the system core files, it is recommended for novice or log in user mode, switch user command is:

root @ ubuntu: ~ # su ubuntu # # to switch to ubuntu users

ubuntu @ ubuntu :/ root $ cd # # Jump to user directory

ubuntu @ ubuntu: ~ $ cd Desktop / # # Jump to the desktop

ubuntu @ ubuntu: ~ / Desktop $[/vc_column_text][/vc_tab][vc_tab title=” Common linux command ” tab_id=”1393549043-2-0″][vc_column_text]Some new user say,” when you know how to  switch on a computer,  you can play the computer”, there is no power button on pcduino,  how turn on and turn off on pcduino?

pcDuino shutdown instructions:

ubuntu@ubuntu:~/Desktop$ sudo shutdown now##you can see some information as below:

Broadcast message from root@ubuntu

(/dev/ttyS0) at 5:27 …

The system is going down for maintenance NOW!

Now pcDuino has been shut down , then how to turn  pcDuino on ? There are two ways: one,reseating pcDuino power; two, according pcDuino above “RESET” button , you will see pcDuino initialization information.

Attach some commonly used linux commands

sudo apt-get update update the local software source

sudo apt-get upgrade update pakage list of the system

sudo apt-get autoclean delete all the configuration file of remove pakage

sudo apt-get clean clean up all the software cache
sudo apt-get autoremove delete isolated software is no longer used in  system
uname -a view kernel
cat /etc/issue View Ubuntu version
lsmod View the kernel module is loaded l
lsusb View USB device
sudo ethtool eth0 View card status
cat /proc/cpuinfo View CPU information
lshw Displays the current hardware information
sudo fdisk -l See the hard disk partition
sudo hdparm -i /dev/hda see  hard disk information 
ls -a list all files in the current directory, including . hidden file header
ls-l or ll list details the current directory file
pwd View the current directory  absolute path
cd ..  back to the current directory on a directory
cd – back to the last directory
cd ~or cd back to the current user’s home directory
cd ~username back to the specified user home directory
mkdir  directory name  create a directory
mkdir –p recursion to create some nested directory
rmdir empty directory name  delete an empty directory
rm file name to delete a file or multiple files
rm -rf non empty directory name recursive delete all of a non empty directory, not to mention type -f
cat file name 一  screen to view the file contents
more file name page to view the file contents
less file name controllable paged view the contents of the file
grep character file name according to the character matching to view the file contents
mv path / file / Warp / file under the file path to move relative to the absolute path
mv  file name new name changed its name in the current directory
cp / path / file / mobile absolute path under the file to the current directory
find  path -name “string” search path within the meet the string matching files and directories
ln  the source file name a link source files in the current directory hard links
Ln -s a b  a current directory to create a symbolic link b
touch file1 file2 create two empty files
df  report file for the total capacity of the system, using the amount of remaining capacity .
du -b /home . see the current / capacity HOME directory (k) and the capacity of subdirectories (k).
fdisk -l see the system partition information
fdisk /dev/sdb is a new SCSI hard disk partition
mkfs.ext3 Mkfs.ext3 /dev/sdb1is the first one of the first SCSI hard disk formatted primary
ext3  file system
mkfs.ext2 Mkfs.ext2/dev/sdb2  formatted as ext2 file system
mount -t type device file system path access path # file system type Disk Management
umount /mnt/cdrom Uninstall / mnt / cdrom is empty
chmod u+s file for the file ‘s owner with a special permission
chmod g+r file for the file ‘s permissions are set to read together
chmod o+w file for other users by adding file write permissions
chmod a-x file  for all users file minus execute permissions
chmod 765 file for the file ‘s owner is set to full permissions to read and write is a group set right , the other user has read and execute permissions heart
chown root /home change /home to the main change root user
chgrp root /home change / home into a root group[/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]