Why is the root file system mounted read-only during boot and remounted with write permission later on?

A GRUB boot loader installed in the MBR was accidentally overwritten. After booting with a rescue CD-ROM, how can the lost GRUB first stage loader be recovered?

The user's quotas on the server were reduced from 200MB to 100MB. Besides sending emails to all users, it was requested that a message should communicate the change every time a user access the server...

In order to find all library dependencies of /usr/bin/foo, which of the following statement is true?

What command is used to create an ISO9660 filesystem that can be properly accessed from a Windows 95/98 machine? A. mkisofs -l -o backup.iso /home/joe B. mkisofs -J -T -r -o backup.iso /home/joe ...

You have written a little startup script (/usr/local/bin/startup.sh) that should automatically execute when entering runlevel 3. According to the standards, how can this best be achieved?

What happens when the Linux kernel can't mount the root filesystem when booting?

One of the IDE hard drives in a server is transferring data very slowly. What command must be run to enable DMA on it? A. hdparm -d /dev/hda B. hdparm --dma /dev/hda C. hdparm --dma /dev/hda1 D....

Which command would you use to apply a diff file to an original? A. patch > diff-file B. patch < diff-file C. patch << diff-file D. cat diff-file >> kernel E. cat diff-file &l...

What script is included with the kernel source to patch a kernel? A. patch B. patch-kernel C. apply-patch D. update-kernel