How does Ethereum set the network storage location

1. You can choose to trade in the digital currency exchange. At present, the mainstream digital currency exchanges in the market are coin security, fire currency and bitnet.

3. Under Linux system, you can use CD command to enter / etc / sysconfig / network scripts subdirectory, and then use vi command to edit ifcfg-eth0 network card configuration file.

4. Copy an existing configuration file and change it to eth1, then change it to the IP in it

for example, the existing / etc / sysconfig / network scripts / eth0
can be roughly as follows:

device = eth0
onboot = yes
bootproto = static
iPad Dr = 192.168.1.20
netmask = 255.255.255.0
gateway = 192.168.1.255

an existing configuration file and change it to eth1 iPad If Dr is changed to 192.168.1.21, an eth1 with IP 192.168.1.21 will appear

5. Chmod 666 ifcfg-eth0
however, since you are not the owner of the file, you generally do not have permission to do this operation
generally, the root user is required to modify the file

6. All in the / etc directory. But the location is different. IP and gateway are recorded in the ifcfg-eth0 file under / etc / sysconfig / network scripts
DNS is recorded in resolv.conf under / etc
the domain name is in named.conf under / etc

7.

The network configuration files of Ubuntu mainly include: IP address configuration file, host name configuration file and DNS configuration file. The solution is as follows:

1. First check the initial network state

8. Step 1: activate the network card
after the Linux system is installed, the default network card is eth0. Use the following command to activate this network card
# ifconfig eth0 up
Step 2: set the network card to start when entering the system
if you want to get the IP address automatically every time you start the network, you need to set the network service to start when the system starts. One difference between Linux and windows is that many services are stopped by default, and if you start the service one time, but you don't set it to start by default, the service will still stop the next time you enter the system. The following is how to set the network service to start when the system starts
use chkconfig command to make the network service start by default when the system startup level is 0123456
# chkconfig -- level 0123456 network on
Step 3: modify the network card file ifcfg-eth0
modify the ifcfg-eth0 file, set the value of onboot to yes, and let the network service start using the network card. Set the bootproto value to DHCP to let the network card automatically obtain the IP address from the DHCP server< br /># vi /etc/sysconfig/network-scripts/ifcfg-eth0
ONBOOT=yes
BOOTPROTO=dhcp

9. /Etc / network / interface configuration file, static, dynamic, IP, mask, gateway
/ etc / resolv.conf DNS configuration file, if not, create one. If the network card is well configured and DNS is not set, you can't connect to the Internet<

manage the network with network manager:

if the network manager is not configured (not turned on), it will be useless
remove the network card initialization in / etc / conf.d/net and let the network manager manage the network

other related files are only network card control script files
if the network card is not configured well, how to control it

/ etc / SSH
the configuration files are all in / etc
if the configuration file cannot be found, the files in whereis somesoft
/ etc are global configuration, which affects all users
the user profile is only related to the user. In the home / user name /. Mysoft, it is in the hidden directory beginning with. In the user directory. It is impossible for all users to define a device such as a network card. SSH is not necessarily because it is just an application.

10. The solution steps are as follows:
1) make sure that you have a local DHCP service, that is, the server or small router responsible for allocating 192.168.1. X IP
2) cat / etc / sysconfig / network scripts / ifcfg-eth2? Check the configuration of eth2 as follows

device = eth2
bootproto = DHCP
onboot = yes
type = Ethernet
3) ifdown eth2 & ifup eth2 or ifconfig eth2 down & ifconfig eth2 up