Ethereum settings download directory

1. Ethereum wallet address is your bank card number. If you forget the address, you can use the private key, mnemonic words and keystore + password to import the wallet and retrieve it. Buying and selling Ethereum is even easier. You can open an account with $100 in the realm Kingdom, and then analyze the price. Buying up or down means buying in the right direction is profitable.

2. You can install a computer manager on the computer, then open the toolbox and find the software management
in it, you can see that there is the function of unloading, and the specific function of the software will be displayed on it, and then click to unload

3. /Etc / sysconfig / network scripts / ifcfg-eth0 is just a file, not a directory. You can edit it with VI editor
VI
/ etc / sysconfig / network scripts / ifcfg-eth0
then press I to enter the insert mode, Start input content:
device = eth0
bootprotocol = DHCP
onboot = Yes (the configuration method of DHCP is so simple)
static IP configuration:
device = eth0
bootprotocol = static (or none)
IPADDR = 192.168.0.1
netmask = 255.255.255.0
gateway = 192.168.0.254
onboot = yes
(the above is the configuration method of network card, Finally, restart the network card:
/ etc / init. D / network
restart

4. Ifcfg-eth0 is not a directory. If it exists, it should be a file

5. 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

6. Temporary solution 1:
use the command ifconfig eth0 192.168.1. X to set the IP of eth0 normally. This method is only a temporary method, and it will be invalid after the system is restarted<

permanent solution 2:
1. Create ifcfg-eth0 file in / etc / sysconfig / network scripts / directory
2. Set ifcfg-eth0's device, bootproto, onboot, IPADDR, gateway, dns1, domain, netmask, network, name, etc, For example:
device = eth0 physical device name
IPADDR = 192.168.1. X IP address
netmask = 255.255.255.0 subnet mask
Network = 192.168.1.0 specified network, The gateway address
broadcast = 192.168.1.255 is automatically calculated by IP address and subnet mask, According to the IP address and subnet mask, we can automatically calculate whether the device can be activated when
onboot = [yes | no] booting
userctl = [yes | no] whether the non root user can control the device
bootproto = [none | static | BOOTP | DHCP] booting without protocol | static allocation | BOOTP | DHCP protocol
hwaddr = 00:00 13: D3: 27:9f: 80 MAC address
name = eth0 name
3. After the above settings, it can succeed under normal circumstances. If there is still a problem, add ifup eth0 to the file / etc / rc.d/rc.local (/ etc / rc.local script is executed after all other initialization scripts are executed)
4. Restart the computer, OK
other network control commands:
ifdown eth0, ifconfig eth0 down / / shut down the network
ifup eth0 Ifconfig eth0 up / / start the network
- set DNS configuration file location / etc / resolv. Conf
- set service network start / / start the network service
service network stop / / stop the network Service
srvice network restart / / restart the network service
service network status / / view the network service status