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What command will allow you to send a message to all currently logged on users?

You wish to notify all users that you have to take down a service on which they rely. What command will allow you to send a message to all currently logged on users? Enter only the command, not the path.

What command can an ordinary (non-root) user use to mount a floppy disk in this system?

Consider the following /etc/fstab file:

/dev/hda1 swap swap defaults 0 0
/dev/hda2 / ext2 defaults 1 1
/dev/hda3 /home ext2 defaults 1 2
none /proc proc defaults 0 0
/dev/fd0 /media/floppy vfat user,noauto 0 0

What command can an ordinary (non-root) user use to mount a floppy disk in this system? (Please enter the command

with all parameters and/or options)

What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available

What is the correct parameter to pass to the kernel at boot time to force it to use only one of the available processors?

Which configuration file should be modified, to set this kernel parameter permanently?

A database application requires a maximum shared memory segment (shmmax) of 2GB (2147483648 Bytes). Which configuration file should be modified, to set this kernel parameter permanently? Please enter the complete path to the file.


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