VNC auto start

1 . x11vnc -auth /tmp/.Xauth1000 -forever -rfbauth /home/folder/x11vnc.pass -rfbport 5900

2 . x11vnc -nap -wait 5 -noxdamage -pasword "password" -display :0  -forever

How long proccess is started.

ps -p `top -b -n1 | grep firebi* | awk '{print $1}'` -o etime=

if row is more then one:

ps -p `top -b -n1 | grep firebi* | sed '1!d' | awk '{print $1}'` -o etime=

Openvpn Server on Debian.

apt-get update
apt-get install openvpn easy-rsa
gunzip -c /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz > /etc/openvpn/server.conf

vim /etc/openvpn/server.conf
uncoment:
#    dh dh1024.pem
#    push "redirect-gateway def1 bypass-dhcp"
#    push "dhcp-option DNS 208.67.222.222"
#    push "dhcp-option DNS 208.67.220.220"
#    user nobody
#    group nogroup

echo 1 > /proc/sys/net/ipv4/ip_forward

vim /etc/sysctl.conf
uncoment:
#    net.ipv4.ip_forward=1


cp -r /usr/share/easy-rsa/ /etc/openvpn
mkdir /etc/openvpn/easy-rsa/keys

vim /etc/openvpn/easy-rsa/vars

#export KEY_COUNTRY="BG"
#export KEY_PROVINCE="bg"
#export KEY_CITY="Velingrad"
#export KEY_ORG="Home"
#export KEY_EMAIL="email60@abv.bg"
#export KEY_OU="MYOrganizationalUnit"
#export KEY_NAME="server"

openssl dhparam -out /etc/openvpn/dh2048.pem 2048

cd /etc/openvpn/easy-rsa

. ./vars

./clean-all

./build-ca

./build-key-server server

cp /etc/openvpn/easy-rsa/keys/{server.crt,server.key,ca.crt} /etc/openvpn
service openvpn start

./build-key client1
cp /usr/share/doc/openvpn/examples/sample-config-files/client.conf /etc/openvpn/easy-rsa/keys/client.ovpn


#Configuration with script


#!/bin/bash
apt-get update &&
apt-get -y upgrade &&
apt-get -y install openvpn easy-rsa &&
gunzip -c /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz \
> /etc/openvpn/server.conf &&
cd /etc/openvpn/ &&
sed -i.bak -e 's/dh dh1024.pem/dh dh2048.pem/' -e \
's/;push "redirect-gateway def1 bypass-dhcp"/push "redirect-gateway def1 bypass-dhcp"/' -e \
's/;push "dhcp-option DNS 208.67.222.222"/push "dhcp-option DNS 208.67.222.222"/' -e \
's/;push "dhcp-option DNS 208.67.220.220"/push "dhcp-option DNS 208.67.220.220"/' -e \
's/;user nobody/user-nobody/' -e \
's/;group nogroup/group nogroup/' server.conf &&
echo 1 > /proc/sys/net/ipv4/ip_forward &&
sed -i.bak 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf &&
cp -r /usr/share/easy-rsa/ /etc/openvpn &&
mkdir -p /etc/openvpn/easy-rsa/keys &&
cd /etc/openvpn/easy-rsa &&
sed -i.bak 's/export KEY_NAME="EasyRSA"/export KEY_NAME="server"/' vars &&
openssl dhparam -out /etc/openvpn/dh2048.pem 2048 &&
cd /etc/openvpn/easy-rsa &&
. ./vars &&
./clean-all &&
./build-ca &&
./build-key-server server &&
cp /etc/openvpn/easy-rsa/keys/{server.crt,server.key,ca.crt} /etc/openvpn &&
service openvpn start &&
./build-key client1 &&
cp /usr/share/doc/openvpn/examples/sample-config-files/client.conf /etc/openvpn/easy-rsa/keys/client.ovpn










client.ovpn се редактира с името на сървара

Make static arp with bash

#!/bin/bash

start=$1
end=$2
ar=/usr/bin/arping
arp=/usr/sbin/arp
echo "Start is $start and end is $end"
echo
start_end=${start##*.}
end_end=${end##*.}

for i in $(seq $start_end $end_end);do   
    $arp -s `$ar -I eth0 ${start%.*}.$i -c 1 |\
    grep "Unicast" | awk -F" " '{print $4," ",$5}' |\
    sed -e 's/\[//' -e 's/\]//'`
done

Remove empty space's from name of file

#!/bin/bash



DIRECTORY=/home/test


find $DIRECTORY -name "* *"|while read fname;do
new_name=`echo $fname | tr " " "_"`
if [ -e $new_name ];then
echo "Exists"
else
mv "$fname" $new_name
fi
done