nfs with ubuntu

host-pc : 192.168.0.100
target-board : 192.168.0.200

[ host-pc ]
apt-get install nfs-kernel-server nfs-common

vi /etc/exports
/nfs-folder 192.168.0.200(rw,no_root_squash,sync,no_subtree_check)

service nfs-kernel-server restart

[ target board ]
mount -t nfs -o nolock 192.168.0.100:/nfs-folder /mnt

Symbol 'V4L2_PIX_FMT_YUV422P' could not be resolved on eclipse cdt

cp linux mechine ( /usr/include/linux/* ) windows mechine cygwin/usr/include/

project select - right mouse click - Index -> Search For Unresolved Includes

description of linux library

/lib/libfoo.so        # symlink to shared object
/lib/libfoo.so.1      # symlink to shared object
/lib/libfoo.so.1.0.1  # shared object
/lib/libfoo.a          # static library
/lib/libfoo.la         # libtool library

glibc version check with linux

getconf -a | grep libc

nfs mount failure with ubuntu

mount: wrong fs type, bad option, bad superblock on 192.168.0.62:/home/musesoft/work2,
       missing codepage or helper program, or other error
       (for several filesystems (e.g. nfs, cifs) you might
       need a /sbin/mount.<type> helper program)
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

apt-get install nfs-common

timezone or localtime setting with ubuntu

ls /usr/share/zoneinfo
ls /usr/share/zoneinfo/Asia
ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime

or

tzselect
5)Asia
23)Korea(South)
vi /home/musesoft/.profile
TZ='Asia/Seoul'; export TZ

vi /root/.profile
TZ='Asia/Seoul'; export TZ

date

ntp setting with ubuntu

apt-get install ntp

## option
vi /etc/ntp.conf
pool.ntp.org # add

service ntp restart

samba client install & conf with ubuntu

os(smb client) : ubuntu 12.04
os(smb server) : centos 6.5

apt-get install smbclient cifs-utils

smbclient -L smbserverip -U%

mount -t cifs //smbserverip/museshare /mnt/sharefolder -o user=user,password=password,workgroup=workgroup,ip=smbserverip,iocharset=utf8

vi /etc/fstab
//smbserverip/museshare /mnt/sharefolder -o user=user,password=password,workgroup=workgroup,ip=smbserverip,iocharset=utf8

dual nic setup for centos

## WAN
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=static
IPADDR=118.x.x.x
NETMASK=255.0.0.0
GATEWAY=118.x.x.x
DNS1=8.8.8.8
DNS2=8.8.4.4
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth0"
HWADDR=x:x:x:x:x
NM_CONTROLLED=no
USERCTL=no

## NAT
DEVICE=eth1
TYPE=Ethernet
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.x
NETMASK=255.255.255.0
#GATEWAY=192.168.0.1 # this point
DNS1=8.8.8.8
DNS2=8.8.4.4
DEFROUTE=no # this point
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="System eth1"
HWADDR=x:x:x:x:x
NM_CONTROLLED="no"
USERCTL=no

apt-get

apt-get autoremove gcc-arm-linux-gnueabi

apt-cache search gcc-arm

for repo use in ubuntu

apt-get install phablet-tools

samba install & conf with ubuntu

## linux
useradd username
passwd username

apt-get install samba

smbpasswd -a username

vim /etc/samba/smb.conf

[sharename]
comment = Samba Server
path = /home/username
valid users = username
writable = yes
public = yes
create mask = 0777
directory mask = 0777

service samba restart
service smbd restart

## windows
\\192.168.0.x
login

Error found when loading /root/.profile

Error found when loading /root/.profile

stdin: is not a tty

as a result the session will not be configured correctly



==>
vi /root/.profile

# ~/.profile: executed by Bourne-compatible login shells.

if [ "$BASH" ]; then
  if [ -f ~/.bashrc ]; then
    . ~/.bashrc
  fi
fi

tty -s && mesg n
#mesg n

7z with ubuntu

apt-get install p7zip

unzip : 7zr x filename.7z
zip : 7zr a filename.7z filename1 test2 test3

unzip with centos

yum install unzip

unzip filename.zip

execute permission with linux

chmod +x the_file_name

snmp with centos

yum install net-snmp net-snmp-utils

vi /etc/snmp/snmpd.conf

# Map 'idv90we3rnov90wer' community to the 'ConfigUser'
# Map '209ijvfwer0df92jd' community to the 'AllUser'
#       sec.name        source          community
com2sec ConfigUser      default         idv90we3rnov90wer
com2sec AllUser         default         209ijvfwer0df92jd

# Map 'ConfigUser' to 'ConfigGroup' for SNMP Version 2c
# Map 'AllUser' to 'AllGroup' for SNMP Version 2c
#                       sec.model       sec.name
group   ConfigGroup     v2c             ConfigUser
group   AllGroup        v2c             AllUser

# Define 'SystemView', which includes everything under .1.3.6.1.2.1.1 (or .1.3.6.1.2.1.25.1)
# Define 'AllView', which includes everything under .1
#                       incl/excl       subtree
view    SystemView      included        .1.3.6.1.2.1.1
view    SystemView      included        .1.3.6.1.2.1.25.1.1
view    AllView         included        .1

# Give 'ConfigGroup' read access to objects in the view 'SystemView'
# Give 'AllGroup' read access to objects in the view 'AllView'
#                       context model   level   prefix  read            write   notify
access  ConfigGroup     ""      any     noauth  exact   SystemView      none    none
access  AllGroup        ""      any     noauth  exact   AllView         none    none

/etc/init.d/snmpd restart

samba server install & conf with centos

yum install samba

chkconfig smb on

mkdir /home/sharename

useradd sharename
passwd sharename

smbpasswd -a sharename ( exist user )

chmod 777 /home/sharename

/etc/samba/smb.conf ( add )
[sharename]
comment = sharename
path = /home/sharename
public = yes
writable = yes
write list = sharename KK
cresate mask = 0777
directory mask = 0777

iptables -I INPUT 4 -m state --state NEW -m udp -p udp --dport 137 -j ACCEPT
iptables -I INPUT 5 -m state --state NEW -m udp -p udp --dport 138 -j ACCEPT
iptables -I INPUT 6 -m state --state NEW -m tcp -p tcp --dport 139 -j ACCEPT
/etc/init.d/iptables save
/etc/init.d/iptables restart

/etc/init.d/smb restart

wireless static set for centos by wpa_supplicant

centos : Linux localhost.localdomain 2.6.32-504.23.4.el6.x86_64 #1 SMP Tue Jun 9 20:57:37 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

1. wpa_passphrase ssidname pskpassword

2. vi /etc/sysconfig/wpa_supplicant

# Use the flag "-i" before each of your interfaces, like so:
#  INTERFACES="-ieth1 -iwlan0"
INTERFACES="-iwlan0"

# Use the flag "-D" before each driver, like so:
#  DRIVERS="-Dwext"
DRIVERS=""

# Other arguments
#   -u   Enable the D-Bus interface (required for use with NetworkManager)
#   -f   Log to /var/log/wpa_supplicant.log
#   -P   Write pid file to /var/run/wpa_supplicant.pid
#        required to return proper codes by init scripts (e.g. double "start" action)
#        -B to daemonize that has to be used together with -P is already in wpa_supplicant.init.d
OTHER_ARGS="-u -f /var/log/wpa_supplicant.log -P /var/run/wpa_supplicant.pid"

3. vi /etc/sysconfig/network-scripts/ifcfg-wlan0
DEVICE=wlan0
TYPE=Wireless
ONBOOT=yes
NM_CONTROLLED=no
HWADDR=30:10:B3:04:7C:1B
BOOTPROTO=static
BROADCAST=xxx.xxx.xxx.xxx
IPADDR=xxx.xxx.xxx.xxx
PREFIX=24
GATEWAY=192.168.0.1
DNS1=xxx.xxx.xxx.xxx
IPV6INIT=no
NETWORKING_IPV6=no
ESSID="ssidname"

4. /etc/init.d/network restart

HW info for linux

dmidecode -t typenumber
:: DMI table decoder

       Type   Information
       --------------------------------------------
          0   BIOS
          1   System
          2   Baseboard
          3   Chassis
          4   Processor
          5   Memory Controller
          6   Memory Module
          7   Cache
          8   Port Connector
          9   System Slots
         10   On Board Devices
         11   OEM Strings
         12   System Configuration Options
         13   BIOS Language
         14   Group Associations
         15   System Event Log
         16   Physical Memory Array
         17   Memory Device
         18   32-bit Memory Error
         19   Memory Array Mapped Address
         20   Memory Device Mapped Address
         21   Built-in Pointing Device
         22   Portable Battery
         23   System Reset
         24   Hardware Security
         25   System Power Controls
         26   Voltage Probe
         27   Cooling Device
         28   Temperature Probe
         29   Electrical Current Probe
         30   Out-of-band Remote Access
         31   Boot Integrity Services
         32   System Boot
         33   64-bit Memory Error
         34   Management Device
         35   Management Device Component
         36   Management Device Threshold Data
         37   Memory Channel
         38   IPMI Device
         39   Power Supply
         40   Additional Information
         41   Onboard Devices Extended Information
         42   Management Controller Host Interface