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- What to do if ssh cannot connect to centos7
- The solution to the problem that ssh cannot connect to centos7 is: 1. Execute the [rpm -qa | grep ssh] command to check whether sshd is installed. If not, install it; 2. Execute the [service sshd restart] command to restart the ssh service; 3. Set The ssh service starts automatically after booting.
- CentOS 3201 2020-05-21 09:51:24
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- How to configure network connection in centos
- The method for configuring network connection in centos is: 1. Set vmware to NAT mode, and set the subnet IP and gateway IP; 2. Edit the ifcfg-ens33 network card configuration file and set [BOOTPROTO=dhcp] and [ONBOOT=yes]; 3. Restart the network card.
- CentOS 8871 2020-05-21 09:38:34
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- What should I do if nginx cannot be accessed under centos?
- The solution to the problem that nginx cannot be accessed under centos is: 1. Execute the [firewall-cmd --permanent --add-port=80/tcp] command to open port 80; 2. Execute the [firewall-cmd --reload] command to restart the firewall.
- CentOS 3152 2020-05-20 15:28:58
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- How to check system version information in centos
- The method for checking system version information in centos is: 1. Check the system version file name through the [ll /etc/*centos*] command; 2. Check the system version number through the [cat /etc/centos-release] command.
- CentOS 3873 2020-05-20 15:13:33
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- How to switch from ordinary user to root user in centos7
- The way to switch from a normal user to a root user in centos7 is to switch by executing the [su] command. If we want to switch from the root user to a normal user, we need to execute the [su username] command.
- CentOS 7950 2020-05-20 15:03:12
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- What should I do if centos7 cannot ping the gateway under the virtual machine?
- The solution to the problem that centos7 cannot ping the gateway under the virtual machine is: 1. Change the network connection mode to NAT mode; 2. Edit the network card configuration file and configure static IP, gateway and subnet mask; 3. Configure DNS; 4. Restart the network card.
- CentOS 4251 2020-05-20 14:47:48
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- How to compile c language code in centos
- The method for centos to compile C language code is: 1. Execute the [yum -y install gcc.x86_64] command to install gcc; 2. Use the gcc compiler to compile the C language program. The specific command is such as [gcc test.c], which means test. c file is compiled into an executable file.
- CentOS 8442 2020-05-20 14:27:58
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- What should I do if centos7 cannot access the Internet?
- The solution to the problem that centos7 cannot access the Internet is: 1. Execute the [ifconfig] command to view the network card name; 2. Execute the ls command to view the network card configuration file name; 3. Open the network card configuration file and modify the configuration [ONBOOT=yes]; 4. Restart the network card.
- CentOS 3162 2020-05-20 14:06:31
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- What should I do if centos does not recognize the network card?
- The solution to centos not recognizing the network card is: 1. Execute the [lspci | grep -i ethernet] command to view the network card driver and download the driver; 2. Execute the [yum install] command to install the gcc compiler; 3. Install the kernel source code; 4 , Restart the network service.
- CentOS 4451 2020-05-20 13:54:32
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- What should I do if centos cannot be started after installing centos from a USB flash drive and removing the USB flash drive?
- The solution to the problem that centos cannot start after installing the U disk after removing the U disk is: 1. Switch to the root user and enter grub mode; 2. Edit the grub.conf configuration file; 3. Re-enter grub mode and execute [grub>root(hdx, y)] command; 4. Restart the system.
- CentOS 2120 2020-05-20 13:40:39
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- How to set a static IP address in centos7
- The method for setting a static IP address in centos7 is: 1. Edit the network card configuration file and modify the [bootproto=static] and [onboot=yes] configurations; 2. Add the IP address, subnet mask, gateway and dns server; 3. Restart the network Serve.
- CentOS 6428 2020-05-19 16:31:11
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- How to set the screen not to sleep in centos7
- How to set the screen not to sleep in centos7: 1. Click the [applications], [syetem tools], and [settings] options in sequence; 2. Enter the [privacy] option, find the [screen lock] option, and turn on this option.
- CentOS 8817 2020-05-19 16:11:40
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- How to completely uninstall php on centos
- The method to completely uninstall PHP on centos is: 1. Execute the [rpm -qa | grep php] command to view the PHP software package; 2. Execute the [rpm -e] command to uninstall the PHP software package; 3. Execute the [php -v] command to check whether Completely uninstall.
- CentOS 3033 2020-05-19 16:00:01
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- What to do if ssh login fails on centos
- Solution to ssh login failure in centos: 1. Reinstall openssh-server; 2. Generate a key; 3. Edit the configuration file sshd_config and add the [PubkeyAuthentication yes] configuration; 4. Restart sshd.
- CentOS 3839 2020-05-19 15:27:59
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- How to grant root permissions to ordinary users in centos
- The method for centos to grant root permissions to ordinary users is: 1. Execute the [vim /etc/sudoers] command to open the configuration file; 2. Find the configuration [root ALL=(ALL) ALL] and add [user ALL=(ALL) under the configuration ) ALL] can be configured.
- CentOS 5258 2020-05-19 15:16:57
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