commands/process to reset root password
-:- on boot:
select most recent kernel
`e` to edit
goto line with linux16, add `` to end of line
`ctrl+x` to continue boot to rd rescue mode
remount /sysroot as readable (defaults to read only in rd rescue mode):
`mount -o remount,rw /sysroot`
...
Booting to the emergency target state drops to a rescue shell after the 'root' filesystem has
been mounted readonly, but BEFORE other FS checks are carried out. Although you could
do the same with 'rd.break' it would require considerably more effort.
You are a member of a team of admins who are responsible for a critical system. This
system has two different web servers installed: The first (Nginx) is used to serve content,
the other (httpd) is installed only to satisfy dependencies and should never be started as it
causes a conflict. What command could you run to ensure that 'httpd' is never accidentally
started or enabled by another admin?
✓ -:- systemctl mask httpd
You're having a bad day and accidentally delete the 'initramfs' file in /boot that matches
your current kernel. Which command would you run to recover from this?
✓ -:- dracut
You've just made a configuration change to the 'SSHD' service and want to daemon to
reload it's configuration without disconnecting anyone. How could you accomplish this?
✓ -:- systemctl reload sshd.service
persistent hostname change with systemd
3|Page | Grade A+| 2024/2025
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