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40 Cards in this Set

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  • Back
What is the purpose of the setserial command?
configuring serial ports
During what startup step do most hardware problems occur?
during BIOS (POST) initialization
What is indicated if startup stops after "LI" from LILO displays?
kernel can't be found
What is the most important utility on a boot rescue disk?
fsck
What does Set-UserID do?
allows users executing a file to do so as the file's owner
What password setting allows encrypted passwords of up to 256 characters?
md5
What is the purpose of the cpio command?
to copy files into and out of an archive file
What is restore used for?
restoring files backed up with the dump command
What are the four main types of backups?
full, incremental, differential, and archive
What files are backed up in a differential backup?
all files changed since the last full backup
How does an archive backup work?
backs up the files, then removes them from the system
What are the three backup rotation schedules?
son, father/son, grandfather/father/son
What are the three operating modes for cpio?
copy-in, copy-out, and copy-pass
What does dump -0 indicate?
a full backup
What does a dump level higher than 0 indicate?
an incremental backup
What ls switch displays hidden files?
-a
What does mv -i do?
prompts before overwriting
What command is used to create a file that does not exist?
touch
What does mount -t do?
indicates the type of filesystem to be mounted
What does umount -a do?
unmounts all filesystems in /etc/mtab
What does umount -a do?
unmounts all filesystems in /etc/mtab
What file controls the number of virtual consoles created during startup?
/etc/inittab
What is the maximum number of virtual consoles that can be created?
63
What is the maximum number of virtual consoles that can be created?
63
What other remote connection type does SSH resemble?
telnet
Where is the Bash executable located?
/bin/bash
How is && used in Bash?
command1 && command 2: command2 executed only if command1 returns an exit status of 0
How is || used in Bash?
command1 || command2: command2 is executed only if command1 returns a non-zero exit code
How is || used in Bash?
command1 || command2: command2 is executed only if command1 returns a non-zero exit code
What does exit code 0 indicate?
success
What does the Bash command bg do?
resumes a suspended job in the background
What does the Bash command fg do?
resumes a job in the foreground, making it the current job
What are the eight steps in bootup?
BIOS, MBR, LILO, boot prompt, kernel initialization, start of init process, execution of startup scripts, login
Where is LILO loaded by default?
in the MBR
What causes LILO to halt with L and some numbers displayed?
a disk error
What can be done so that a user won't see a directory listing if a user requests a webpage that is a directory?
remove indexes from httpd.conf
What is the dump command used for?
making backups
Why should restores not be sent to the original location
changed files might be overwritten
Where is user mail that has not been downloaded stored?
/var/spool/mail
What files are backed up in an incremental backup?
all files changed since the last backup