Linux Set 15
Terms
undefined, object
copy deck
- 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 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 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
- 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