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