A Practical Guide To Linux Commands, Chp. 4-6

Front 1

What directory contains all the files needed by the system for initial startup?

Back 1

/boot

Front 2

What command will create a new directory called sourcefiles?

Back 2

mkdir sourcefiles

Front 3

After the chmod 600 sample command has been executed (where sample is a directory):

Access privileges for sample are set to read and write for the owner

Nobody other than the owner can perform any operations on sample

The cd sample command would report an error message, Permission denied (or somethingsimilar)

Back 3

All of the above, Removing the execute bit to a directory makes it unsearchable.

Front 4

The absolute pathname of a file in Linux starts with the

Back 4

Root directory on the system

Front 5

File access permissions include:

Back 5

read, write, and execute

Front 6

What command will allow you to remove a link to a file?

Back 6

rm

Front 7

The output of the command: ls -l produces information about each file in the working directory including:

file name, file size, and time.

file type, link count, and date.

owner and owner's group.

Back 7

All of the above, file name, file size, and time, file type, link count, and date, owner and owner's group.

Front 8

If a file to which a soft link exists is deleted, what happens?

Back 8

The soft link points to a nonexistent file

Front 9

A file with the following permissions: rwxr-xr-x

is readable by all users.

is writeable by the owner only.

is executable for other users.

Back 9

All of the above

Front 10

If a user (not the owner or a group member) can use cd to change to a directory such as /home/rbass/studentstuff; and use ls to view the files in the directory; what permissions must be set?

Back 10

Read and execute for other users.

Front 11

For a directory, users granted read and execute permissions are allowed to:

Back 11

read the directory's contents.

Front 12

Which type of link can be used to create a directory entry to a file in another file system?

Back 12

Soft links are used to link files across file systems.

Front 13

The set-user-ID bit (SUID) allows an executable file to:

Back 13

Assume owner persmissions

Front 14

What is the most common and preferred method of sharing files among selected Linux/UNIX users?

Back 14

links

Front 15

After creating a hard link to a file, the original file is deleted, what happens to the hard link?

Back 15

The original file name is deleted but the hard link still points to the file.

Front 16

A hard link is:

Back 16

A pointer to the inode of an existing file.

Front 17

The root user has the authority to:

delete all user accounts (including management personnel) on the system without priornotification.

delete any file on the system including those, that if deleted, would make the system inoperable.

change or remove any password on the system without prior notification of the user.

all of the above

None of the above.

Back 17

all of the above

Front 18

An inode in Linux

Back 18

is the control structure for a file.

Front 19

File access permissions are grouped into the categories:

Back 19

user, group, and others.

Front 20

The shell expands the characters: ~/ (a tilde followed by a slash) at the start of a pathname

Back 20

into the pathname of your home directory

Front 21

The ls -l ~ displays the long listing of all the files in your

Back 21

Home directory denoted by the ~.

Front 22

When a user is given execute permission for a directory, he/she may:

Back 22

search it

Front 23

If you want to set all three special access bits (SUID, SGID, and sticky) for the sample file and set the rest of its access bits to 754 with one command:

Back 23

You need to execute the chmod 7754 sample command

Front 24

What command will create a soft link named: "mypass" to /etc/passwd?

Back 24

ln -s /etc/passwd mypass

Front 25

A permission value of 764 for the sample file means that:

Back 25

All of the above, Owner of sample can read, write, or execute sample, Users in owner s group can read or write sample, Everyone else can read sample

Front 26

The command: chmod 600 sample :

Back 26

Takes away all privileges from the group users

Front 27

To dereference a symbolic link means:

Back 27

to follow the link to the target file.

Front 28

Which command creates a link?

Back 28

ln

Front 29

If myprograms is a directory, what does the command:

rm -r ~/myprograms

do?

Back 29

recursively deletes files including any subdirectories in myprograms, and then deletes the directory myprograms.

Front 30

For the cp file1 ~/dir1/dir2 command to successfully copy file1 into ~/dir1/dir2, you must have:

Back 30

Read access for file1, execute access for ~, dir1, and dir2, and write access for dir2

Front 31

The inode number of a file in LInux is

Back 31

Unique for every file

Front 32

A identity of the current working directory can be displayed with what command?

Back 32

pwd

Front 33

If you have any empty directory called ~/backups, you can copy directory ~/courses into it by using the following command:

Back 33

cp -r ~/courses ~/backups

Front 34

The set-user-ID bit (SUID) allows an executable file to:

Back 34

take on the privileges of the owner of the file when it executes.

Front 35

For the file with the name: solid, which of the following is not a valid use of the chmod command?

chmod 777 solid

chmod ugo-rwsolid

chmod a+x solid

chmod solid +read

Back 35

chmod solid +read

Front 36

What command will change the working directory to /home/rbass/sourcefiles?

chdir /home/rbass/sourcefiles

cd /sourcefiles

cd /home/rbass/sourcefiles

cdir /home/rbass/sourcefiles

Back 36

cd /home/rbass/sourcefiles

Front 37

What types of files are candidates for having the execution access permissions set for users?

Back 37

script files.

Front 38

In the output of the ls -l sample command, the leftmost three letters indicate the:

Back 38

Type of file and state of read and write privileges for the owner of sample

Front 39

Which of the following commands will remove all access permissions to file: sample for the group and others?

chmod go=rwx sample

chmod a-rwsample

chmod go= sample

chmod a= sample

Back 39

chmod go= sample

Front 40

Linux supports the following file types:

Back 40

Ordinary file, directory, link file, block special file, character special file, named pipe (FIFO), and socket

Front 41

What is a soft link?

Back 41

A soft link is a new file with the path name to the original file.

Front 42

What is the result of the following command? chmod 700 myfile

Back 42

sets access privileges for myfile to read, write, and execute for the owner.

Front 43

The relative pathname of a file in Linux

Back 43

locates a file relative to the current working directory.

Front 44

The output of the command: ls -l produces information about each file in the working directory including:

file name, file size, and time.
file type, link count, and date.
owner and owner's group.
all of the above.

Back 44

all of the above.

Front 45

What is the purpose of the "--help" option lists the hardware devices available for use with the command.

provides error messages that assist in debugging if a command fails.
provides interactive assistance with a command as it executes.
None of the above

Back 45

None of the above

Front 46

Given the command:
cat ?[xyz]*.cpp
which of the following files with be displayed?

Myfile.cpp
Xyz.cpp
9zjunkfile.cpp
All of the above.
None of the above.

Back 46

All of the above.

Front 47

A command that reads its standard input from the output of another command; and, writes its standard output to the standard input of another command is called:

a redirect
a filter
a link
All of the above.
None of the above.

Back 47

a filter

Front 48

In the following Linux command, which is the command argument?

ls -al m*

m*
-al
ls
None of the above.

Back 48

m*

Front 49

What is the shell special character that creates a pipe between commands?

Greater than sign (>)
Less than sign (<)
Tilde (~)
Colon (:)
None of the above

Back 49

None of the above

Front 50

The command:
ls program[12345]
can generate which of the following lists of filenames?

program1 program2 program3.cpp program.2
program1 program2 program5
program1 program3 programX
program5 program3 program1 program9

Back 50

program1 program2 program5

Front 51

Which of the following commands is executed in the background?

find / -name memo55 > mem.out &
ls -al / | grep root > rootsFiles ?
find ~ -name rbass > mystuff <2 background
None of the above.

Back 51

find / -name memo55 > mem.out &

Front 52

What command will terminate process 18228 which is running in the background?

del 18228
rm 18228
kill [18228]
kill 18228

Back 52

kill 18228

Front 53

Which command will append file extra to customers?

append extra to customers
cat extra >> customers
cp customers extra to customers
mv customers extra to customers

Back 53

cat extra >> customers

Front 54

Which file will not be displayed with the following command?

cat page[134589]*
page3
page1
page6
page9
None of the above.

Back 54

page6

Front 55

What character is used to separate elements on the Linux command line?

spaces and tabs
hypens
asterisks
All of the above
None of the above

Back 55

spaces and tabs

Front 56

What is the output of the jobs command?

A list of all running processes.
A list of suspended jobs and background jobs.
a list of jobs scheduled to be run.
a list of the jobs executed by the user during the current work session.

Back 56

A list of suspended jobs and background jobs.

Front 57

The command:
ls ~/*
will list:

all files in the user's working directory
all files in the user's home directory.
all files in the user's home directory except hidden files
all files in the user's working directory except hidden files.

Back 57

all files in the user's home directory except hidden files

Front 58

What is a LInux shell?

A program which interprets and executes user commands.
A program which uniquely identifies the variant of Linux running on a computer
A primitive predecessor to a graphical user interface
The LInux users command library.

Back 58

A program which interprets and executes user commands.

Front 59

Where is the output of the following command displayed?

cat file1 | grep rbass > /dev/null
the output disappears without a trace.
the output is redirected to file null in directory /dev
since the output is redirected before /dev/null is opened, it appears on stdout.
None of these.

Back 59

the output disappears without a trace.

Front 60

If a command is a simple file name, the shell will search:

the directories listed in the PATH variable.
the directories in the path to the working directory and including the working directory.
the working directory, the /usr/bin directory, and the /bin directory.
All of the above.

Back 60

the directories listed in the PATH variable.

Front 61

The command:
ls -al | less
is an example of ___________________.

output redirection
pipleline
input redirection
file extending

Back 61

pipleline

Front 62

What is the shell special character that matches zero or more characters?

Square brackets [ ]
Pound sign (#)
Dollar sign ($)
Asterisk (*)
None of the above

Back 62

Asterisk (*)

Front 63

The question mark (?) is a special character that cause the shell to:

generate a help screen associated with a specific command.
generate an interactive use of the command it is used with.
generate filenames which match any single character in the name of a file.
generate filenames which match any number of characters from 0 to 99 in the filename.

Back 63

generate filenames which match any single character in the name of a file.

Front 64

What command will send page1, page2, page3, page4, page5, and page6 to the local printer?

lpr *[123456]
lpr page?
lpr p*
lpr p*[123456]
All of the above.

Back 64

All of the above.

Front 65

When interpreting your commands, the shell assumes the first word you type on the command line is

a valid command name or program.
a valid command option to a command.
an argument for the command.
the correct path to the command.
None of the above

Back 65

a valid command name or program.

Front 66

The
who | sort > grep
command:

Sorts the output of who and creates a file called grep.
Generates an error since grep is a reserved word.
Redirects the sorted version of the who command to the grep utility.
None of the above

Back 66

Sorts the output of who and creates a file called grep.

Front 67

What are the two types of shell commands?

shell builtins and and stand alone utilities
utility and program calls.
file references and device calls
hardware manipulators and software.

Back 67

shell builtins and and stand alone utilities

Front 68

Which ls command option will display hidden files?

-h
-all
-a
None of the above.

Back 68

-a

Front 69

In Vim, how can you view the files in your home directory without exiting the editor?

enter the command :/ls $HOME
enter the command :!ls ~
enter the command :shell the do an ls command.
none of the above.

Back 69

enter the command :!ls ~

Front 70

What is the name of the startup file which sets the parameters for vim?

.bash_profile
.bashrc
VIMINIT
.vimrc

Back 70

.vimrc

Front 71

Which of the following best describes what an editor buffer is?

A disk file
A temporary storage area for text you are editing
A protective shell between vim and malicious software.
A brief delay between data entry and storage in memory.
None of the above

Back 71

A temporary storage area for text you are editing

Front 72

To insert a blank line below the line the cursor is on in the vim work buffer, the command is:

A
i
$a
o

Back 72

o

Front 73

Which command is used to delete the character before the cursor location in vim editor?

x
X
d
D

Back 73

X

Front 74

What are the vim modes of operation?

command, escape, and append.
command, last line, and insert
input, command, and visual
last line, insert, and execute

Back 74

command, last line, and insert

Front 75

What does the vim command:
:1,$s/ten/10/g
do?

Replaces every occurrence of ten with 10 from line 1 to the current line.
Replaces every occurrence of the string ten with with the string 10.
Searches for the first occurrence of ten on line 1 and replaces it with 10.
Searches for the first occurrence of ten on line 1 and replaces it with 10.
Searches for the first occurrence of ten on line 1 and replaces it with $10.

Back 75

Replaces every occurrence of the string ten with with the string 10.

Front 76

What vim command restores text that you just deleted?

u
:undo
Control-U
:r

Back 76

u

Front 77

The vim period (.) command:

cause the last command to be undone.
moves the cursor to the top of the buffer.
repeats the last command.
None of the above.

Back 77

repeats the last command.

Front 78

Which one of the following statement is not true?

vim editor is the improved version of vi editor
vim editor commands are case sensitive
vim editor has three modes of operation: command mode, last line mode, and insert mode
vi stands for virtual editor

Back 78

vi stands for virtual editor

Front 79

What vim command searches the current line in the buffer for big and replaces it with large?

:s/big/large/
:s/large/big/
:s/big/:r/large/
:/s/big/r/large/

Back 79

:s/big/large/

Front 80

In which vim mode do you actually type-in the text?

Command Mode
Insert Mode
Last Line Mode
Data Mode
Typing Mode

Back 80

Insert Mode

Front 81

Which character in vim allows you to go from Insert Mode to Command Mode?

Control Key
Escape Key
Control, Alt, Delete Keys Simultaneously
Any of the above will work.
None of the above

Back 81

Escape Key

Front 82

Which keystroke command in vim allows you to append text AFTER the character the cursor is on?

i
a
o
u
None of the above

Back 82

a

Front 83

While in vim command mode, what command will exit without saving the file?

:q
:Q
:q!
:wq

Back 83

:q!

Front 84

In Vim, text that has been deleted or yanked to the general-purpose buffer can be inserted after the position of the cursor with the command

:put
:/i
p
Control-Insert

Back 84

p

Front 85

Which of the following is a Linux clone of vi?

elvis
nvi
vile
vim
All of the above.

Back 85

All of the above.

Front 86

What command causes vim to display line numbers next to the text being edited?

:i nu
:set number
:insert numbers
:set nums

Back 86

:set number

Front 87

In the vim editor, the key combination CTRL+f

moves screen up one line
moves cursor down one line
moves cursor up one line
moves screen down one page

Back 87

moves screen down one page

Front 88

What command will write the work buffer to the disk and then exit vim?

ZZ
:wq
both of the above are correct.
You must enter two commands;
:s
then
:x

Back 88

both of the above are correct.

Front 89

The vim yank command (y) is identical to the delete command (d)

except that it does not delete text from the work buffer.
except that it deletes the text from the work buffer without making a copy in the general-purpose buffer.
except that it does not place a copy of the deleted text in the general purpose buffer.
and there is no difference between the two commands.

Back 89

except that it does not delete text from the work buffer.

Front 90

The vim command 4dw does which of the following?

Deletes four spaces after the current word
Deletes four words starting at the cursor position
Deletes 4 words after the current line
Deletes four characters from the buffer
None of the above

Back 90

Deletes four words starting at the cursor position

Front 91

Which command searches the work buffer in a file opened in the vim editor?

* or ?
< or >
/ or ?
& or /

Back 91

/ or ?

Front 92

Which vim editor command copies the current line of the file?

yy
yw
yc
none of the above.

Back 92

yy

Front 93

What is the vim command to delete the text from the cursor to the end of the paragraph?

d}
d$
xx
X

Back 93

d}