Linux system setup and basic operation

Last Update:2015-12-09 Source: Internet

Author: User

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Linux system setup and basic Operation

? Use the Preferences settings and system management tools in the GNOME desktop suite to perform the following tasks

A. set a static IP address for the first NIC and be able to communicate with other hosts in the same network segment

Steps:

1. Click "System" → "Manage" → "network" To open the "Network Configuration" window. ：

2. In the Configure Network window, double-click the second network card device to open the Ethernet Devices window. ：

3. In the Ethernet Devices window, select "Statically set IP address:", then enter "IP Address", "Subnet mask", "Default gateway (t) address" below it, then click "Confirm". ：

4. Then right-click on the GNOME desktop and in the popup menu, select "Open Terminal". ：

5. In the terminal window, enter the "Service network restart" command to restart the NIC service, and then enter the "ifconfig" command to see if the IP address is configured successfully. ：

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6. Use the above steps to configure an IP address for another host and test with the "ping" command.

Two Add a user account named Xueyuan and use that account to log in to the GNOME desktop.

Steps:

1. Click "System" → "manage" → "Users and Groups" to open the "User Manager" window. ：

2. In the "User Manager" window, click "Add". ：

3. In the "Create New User" window, enter "User name", "Full name", "Password", "Confirm password", other default, and then click "OK". ：

4. Click "System" → "logout" to login with user Xueyua. ：

5. Enter the user name and password to log in to the system at the following interface. ：

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Three Change the root password of the Linux system to "Redhat" and re-login to the system with the root account.

Steps:

1. Click "System" → "manage" → "root password". ：

2. In the Query window, enter the original root password of the system and click OK. ：

3. In the root Password window, enter the new root password and click OK. ：

4. Then log off the system and log back in as the root account.

Four Set system services ATD, Bluetooth, Crond, ISDN to not start automatically after booting.

Steps:

1. Click "System" → "Manage" → "Server Settings" → "services". ：

2. In the "Service Configuration" window, remove the tick in front of the selected service name and click "Save". ：

Five Edit the/etc/resolv.conf file to add the contents of "NameServer 202.106.0.20".

Steps:

1. Right-click on the desktop, in the popup menu, select "Open Terminal". In the terminal window, type "vim/etc/resolv.conf", and then enter. ：

2. In the "/etv/resolv.conf" File window, first press the lowercase "a" key, switch to the input mode, do not change the other content, the next line directly "NameServer 202.106.0.20". ：

3. Once the input is complete, click the "ESC" key, switch to the last line mode, then enter ": Wq" command to save and exit. ：

? Use the TTY character terminal to complete the following simple administration tasks

A Switch to the 3rd character terminal from the Gnome graphical desktop environment and log in with the/root account

Steps:

Press the key combination "Shift+ctrl+alt" + "F3" into the 3rd character terminal, then enter the root account after "ns login:", enter the password after entering, you can log into the system. ：

Two Switch to the 4th character terminal and log in with the Xueyuan account.

Steps:

Press "ALT+F4" key to enter the 4th character terminal, and then enter the Xueyuan account after "NS login:", enter the password after entering, you can log into the system. ：

Three Check the kernel version, CPU and memory information of the current host, and confirm the IP address of the NIC.

Steps:

Enter the command "Uname-r" to view the kernel version. ：

Enter the command "Cat/proc/cpuinfo" to view the CPU information. ：

Enter the command "Cat/proc/meminfo" to view the memory information. ：

Enter the command "Ifconfig eth0" to see the IP address of the NIC Eth0. ：

Four Perform a delay of 30 minutes to shut down the command while sending a reminder notification at Tty4 to confirm receipt of the shutdown notification.

Steps:

Enter the command "Shutdown-r +30 ' shutdown comment content '" delay 30 minutes shutdown. ：

Press "ALT+F4" key, switch to the 4th character terminal, you can see the relevant machine prompt. Press the "CTRL + C" key to cancel the delay shutdown operation and then enter the command "reboot" to restart the system.

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Note: for a delayed shutdown, restart operation, you can press CTRL + C to cancel if necessary, or the other administrator will perform a "shutdown-c" command to cancel after logging in to another terminal.

Regardless of which commands are used to shut down or restart the operation, it is necessary to do a good job of data backup, improper operation is likely to cause data loss, serious or even cause a system crash, causing unnecessary trouble.

Linux system setup and basic operation

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