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BIOS settings are irrelevant to Linux, except for the initial booting where the BIOS loads the bootloader from a medium, which in turn loads the Linux kernel. The only thing the kernel ever needs from the BIOS after that is to provide power management functions (ACPI). Thus, all settings not related to either booting or power management are ignored.
System-wide configuration files are usually found in /etc. Personalized configuration files are stored in the user's home directory, in files and subdirectories preceded by a "." in their name.
You don't mention what you are looking for in terms of a "running configuration file". In Unix/Linux there are many of these. Most of them can be found in the /etc directory or its subdirectories but not all of them are located in /etc.
The Linux kernel sources can be downloaded from the official Linux Kernel Archives, found at the link below.
The Linux kernel. Beyond that, there are numerous alternative implementations of virtually every Linux program.
There are many FTP server packages in Linux, each with different configuration files and syntaxes. A single question trying to answer how to configure them all would be long and unwieldly, and would duplicate information found in a question about a single implementation. Please ask a question about a single implementation, such as vsftpd or tftpd, instead.
Linux is extremely stable, it has been found to run for years on servers without a singe crash. Linux Uptime is measured in MONTHS not days.
Linux was created in 1991 by Linus Torvalds, then a 21-year-old college student in Helsinki.
There aren't any errors specific to Linux. Linux has the same types of bugs found in every other operating system.
The Linux Load Balancer helps servers stay balanced when there is a lot of activity on the servers. The Linux Load Balancer is a brand that has a site where more information can be found.
To troubleshoot Linux, start by checking system logs for errors, typically found in the /var/log directory, using commands like dmesg or journalctl. Next, confirm that all relevant services are running using systemctl status or service --status-all. Additionally, check resource usage with commands like top or htop to identify any processes consuming excessive resources. Finally, ensure that your network configuration is correct by using commands such as ifconfig or ip a for network interface details.
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