tar

Question 1

tar

Answer 1

GNU tar is an archiving program designed to store multiple files in a single file (an archive), and to manipulate such archives.

Question 2

tar -cvf file.tar /home/user

Answer 2

Creates a tar archive file.

c, Creates a new .tar archive file.

v, verbose

f, File name type of archive file.

Question 3

tar -cvzf file.tar.gz /home/user

Answer 3

Creates a compressed gzip archive file with the z option.

Question 4

tar -cvfj file.tar.bz2 /home/user

Answer 4

Creates a highly compressed bz2 archive file by using the j option.

Question 5

tar -xvf file.tar

Answer 5

Extracts a tar file into the current directory.

x, Extracts the tar file.

v, verbose.

f, File type archive.

Question 6

tar -xvf file.tar -C /home/user/documents

Answer 6

Extracts a tar file into specified directory by using the -C option.

Question 7

tar -xvf file.tar.gz

or

tar -xvf file.tar.bz2

Answer 7

Decompresses and extracts a compressed tar file to current directory.

Question 8

tar -tvf userfiles.tar

or

tar -tvf userfiles.tar.gz

or

tar -tvf userfiles.tar.bz2

Answer 8

This command lists the contents of userfiles.tar and userfiles.tar.gz by using the -t option.

Question 9

tar -xvf userfiles.tar userscript.sh

or

tar –extract –file=userfiles.tar userscript.sh

Answer 9

These commands will extract a single file by calling it out from the .tar file.

Question 10

tar -zxvf userfiles.tar.gz user.doc

or

tar -jxvf userfiles.tar.bz2 user.doc

Answer 10

These commands will extract user.doc out of userfiles.tar.gz and userfiles.tar.bz2 respectively. Make sure to add the right -z or -j flags depending on the mode of compression.

Question 11

tar -xvf serverfile.tar “file1.php” “file2.html”

or

tar -zxvf serverfile.tar.gz “file1.php” “file2.html”

or

tar -jxvf serverfile.tar.bz2 “file1.php” “file2.html”

Answer 11

These commands will untar multiple files by using quotation marks around the files.

Question 12

tar -xvf serverfiles.tar –wildcards ‘*.php’

or

tar -zxvf serverfiles.tar.gz –wildcards ‘*.php’

or

tar -jxvf serverfiles.tar.bz2 –wildcards ‘*.php’

Answer 12

These commands will extract multiple files from the tar files and compressed tar files by using the –wildcard option and then a wildcard search in single quotes.

Question 13

tar -rvf serverfiles.tar xyz.conf

or

tar -rvf serverfiles.tar php/

Answer 13

These commands will add a file or directory to a tar archive by using the -r option.

-r, Appends a tar file.

Question 14

tar -rvf MyImages-14-09-12.tar.gz xyz.txt

or

tar -rvf Phpfiles-org.tar.bz2 xyz.txt

Answer 14

These commands will add files to the gzip and bzip2 files.

Question 15

tar -tvfW serverfiles.tar

Answer 15

This command will list and verify a .tar file by using -W.

-W, Verifies a .tar file.

Note: Verifications cannot be done on a .tar file compressed by gzip or bzip2.