Linux+ Chapter 11

When used with the uncompress command, the ____ option displays the contents of the compressed file to Standard Output.

-c

To remove a package from the system, you can use the ____ option to the rpm command.

-e

When used with the compress command, the ____ option can be used to compress symbolic links.

-f

The ____ option, when used with the gzip command, causes the compression ratio for files that have been compressed to be listed.

-l

When using the cpio utility, the ____ option causes a new archive to be created.

-o

When used with the tar utility, the ____ option causes filenames to be stored in an archive using absolute pathnames.

-p

The ____ option can be used with the tar command to extract a specified archive.

-x

When using the compress utility, each file is renamed with a(n) ____ filename extension to indicate that it is compressed.

.Z

The filename extension given to files compressed with bzip2 is ____.

.bz2

____ is burning software that comes with Red Hat Fedora Core 2.

Brasero Disc Burner

T/F - If a compression utility compresses a file to 52% of its original size, it has a compression ratio of 52%.

False

T/F - To decompress files that have been compressed with the compress utility, you can use the decompress command followed by the names of the files to be decompressed.

False

T/F - Traditionally, CDs/DVDs were used to back up data.

False

T/F - When creating a system backup, temporary files in the /tmp and /var/tmp directories should be included.

False

T/F - When using the gzip utility, the -1 option is also known as best compression and results in a higher compression ratio.

False

Most Linux distributions today use ____ as their package manager.

RPM

Filenames that end with the .tar.gz or .tgz extensions, and represent gzip-compressed tar archives are called ____.

Tarball

T/F - Because its primary use is to back up files in case of system failure, cpio uses absolute pathnames by default when archiving.

True

T/F - It is good form to read the Makefile after you run the configure script.

True

T/F - The compress utility preserves the original ownership, modification, and access time for each file that it compresses.

True

T/F - The dump/restore utility can only work with files on ext2 and ext3 filesystems.

True

T/F - The tar utility cannot back up device files or files with filenames longer than 255 characters.

True

____ are values that are calculated using a MD5 algorithm, a SHA-1 algorithm, or a SHA-256 algorithm. Read Answer Items for Question 13.

Checksum

A ____ is a standard set of instructions used to compress a file.

Compression algorithm

The rate of compression is called the ____.

Compression ratio

The ____ command looks for a Makefile and uses the information within to compile the source code into binary programs using the appropriate compiler program for the local hardware architecture.

make

____ is a command that can be used to copy files to the appropriate location on the filesystem.

make install

____ is a command that can be used to ensure that a file was received in its entirety after you download it.

sum

The ____ command can be used to display the contents of a compressed file.

zcat

The average compression ratio for gzip is ____%.

60-70

The compression algorithm used by the compress utility has an average compression ratio of ____%.

40-50

If no level of compression is specified, the gzip command assumes the number ____.

6

____ are back-up copies of files and directories.

Archives

Archiving all data on a filesystem is performing a ____.

Full backup

You can perform up to ____ different incremental backups using the dump/restore utility.

Nine