How to install centos6.5

To restart network services in CentOS, you must first confirm the network management method used by the system. 1. Use the ps-ef|grepNetworkManager command to determine whether it is a NetworkManager or a traditional network service; 2. If you use a new version of CentOS (such as CentOS7 or Stream), it is recommended to restart the network service through sudosystemctlrestartNetworkManager or sudosystemctlrestartnetwork; 3. You can use nmcliconnectionreload to reload the configuration without interrupting the service, or execute s for specific connections.

Update the system: Run sudoyumupdate-y to ensure the system is up to date; 2. Install EPEL source: execute sudoyuminstalllepel-release-y to obtain the Nginx package; 3. Install Nginx: Use sudoyuminstallnginx-y to install the service; 4. Start and enable Nginx: Set up the power-on startup through sudosystemctlstartnginx and sudosystemctlenablenginx, and use sudosystemctlstatusnginx to confirm the running status; 5. Configure the firewall: If firewalld is enabled, run sudofir

When partitioning new hard disks, fdisk is suitable for MBR partition tables, and parted is recommended for GPT partition tables; when using fdisk, first use lsblk or fdisk-l to identify the hard disk device, run sudofdisk/dev/sdX to create the main/extended partition, set the start and end sectors and enter w to save and refresh the partition table and then format it; when using parted, run sudoparted/dev/sdX to set it to gpt partition table, use mkpart to create partitions to specify GB or percentage, and format it after exiting; pay attention to partition alignment, type settings and FAT32ESP partition required for UEFI startup.

To view the status and rules of FirewallD, you can follow the following steps: 1. Use systemctlstatusfirewalld to confirm whether the service is running. If it is not running, you can start sudosystemctlstartfirewalld and set the power on and start it up with enable; 2. View the current area through firewall-cmd-get-active-zones, and use --get-zones to view all areas; 3. Execute firewall-cmd-list-all to view all rules in the current area. Add the --zone parameter to specify the area, and use --list-rich-rules to view rich

To filter journalctl logs, view them by service or time range. 1. Filter by service name: use journalctl-u, such as journalctl-unginx.service; if you are not sure of service name, you can find systemctllist-units|grep. 2. Filter by time range: use --since and --until to specify the time, such as journalctl--since"1hourago" or journalctl--since"2025-04-0510:30:00"--until"2025

Reboot and enter the GRUB menu, press e to edit the startup item; 2. Add init=/bin/bash or rd.break at the end of linux or linux16 line; 3. If you use rd.break, you need to chroot/sysroot first, then mount-oremount,rw/; 4. Execute passwdroot to set a new password; 5. If SELinux is enabled, run touch/.autorelabel; 6. Execute reboot-f to restart to take effect. This method is suitable for CentOS7 and above and requires physical or console access.

Create a service file: Create a .myapp.service file in /etc/systemd/system/, set the [Unit], [Service], [Install] sections and configure key parameters such as Description, ExecStart (using absolute path), User, Restart, etc.; 2. Reload and enable the service: execute sudosystemctldaemon-reload, enable, and start to enable the service and set the power-on self-start; 3. Avoid common errors: do not use relative paths, do not run with root, ensure the script permissions are correct, must be overloaded after modification, and finally use sudosystemct

Rsync is an efficient and reliable file transfer and synchronization tool. Its basic command structure is rsync[Options] source path and target path, which supports local copying, remote pulling or pushing files. 1. Common options include -a (archive mode), -v (detailed output), and -z (compressed transmission). 2. Use the -essh parameter when performing secure transmission via SSH, and it is recommended to configure the key login to avoid password input. 3. Use --exclude to exclude specific files or directories, such as logs, caches, version control directories, etc., and you can also list multiple exclusions through files. 4. If the transmission is interrupted, you can use --partial to retain the transmitted part and continue from the interruption. Combined with --progress to view the progress. 5. Pay attention