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Linux, hardware, and network administration
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Module 6
Linux System Troubleshooting and Recovery
1
Linux Boot Process: From BIOS to systemd
Trace the Linux boot process stages (BIOS -> GRUB -> Kernel -> systemd) to identify where a failure occurs.
Rescue Broken Systems with Live USB and `chroot`
Boot from a live USB and use `chroot` to gain access to a broken system for repairs.
Reinstalling GRUB in Recovery Mode
Diagnose and resolve bootloader issues by reinstalling GRUB in a recovery environment.
Repairing Filesystems with `fsck`
Repair filesystem errors on an unmounted partition using `fsck`.
5
Troubleshooting Service Failures
Diagnose and resolve a service failure by analyzing logs, checking configuration syntax, and verifying dependencies.
6
Troubleshooting File Permission Issues
Diagnose and fix file permission issues that prevent a service from starting or a user from accessing files.
7
Inspecting Storage Health with `smartctl`
Use `smartctl` to inspect storage device health and interpret S.M.A.R.T. data.
8
System Updates and Kernel Management
Apply security updates and kernel patches, and manage system reboots for kernel upgrades.
Previous module
Linux Process and Performance Management
Next module
Practical Network Analysis