ITN 170 Chapter 7

You need to make the shell script executable. Which of the parameter along with the chmod command should you use? -x -rwx +rwx +x

+x

Which variables are contained in /etc/profile? (choose all that apply) PATH HISTSIZE HOSTNAME USER MAIL

ALL

The if decision construct will always end with the statement _________.

fi (if reversed)

You can use ________ to convert the spaces back to default tabs in a file. cut unexpand cp ls -l expand

unexpand

Which two loops run until a statement becomes true? (choose two) while loop for loop case....esac until loop if....else

while loop until loop

if the ~/.bash_profile does not exist, then the _____ file is read. ~/.bash_login ~/.bash_profile /etc/profile /etc/bashrc

~/.bash_login

The _____ profile is the user configuration file in which the user environment can be configured. ~/.bash_login ~/.bash_profile /etc/profile /etc/bashrc

~/.bash_profile

The ________- gets executed only during a login shell. ~/.bash_login ~/.bash_profile /etc/profile /etc/bashrc

~/.bash_profile

which value with the chmod command will make a shell script executable? 100 400 444 700

700

The output of a command is redirected to a new file with the help of the __________ operator. >> < << >

>

To send the content of one file to another file, you can use the _________ redirector. > << >> <

>

Which operator will overwrite the contents of an existing file? > < >> <<

>

Which operator will append the output to the same file without overwriting it? > < >> <<

>>

True or False? When using the output redirect > on an existing file, the contents of the file will be replaced.

True

When using two output redirects, >>, on an existing file, the file contents will be _____________. appended copied saved deleted

appended

In a scenario, where you have multiple conditions, it is best to use ____ statements. if....else case....esac until loop while loop

case....esac

The default output of a command is displayed on the ________. (choose all that apply) Keyboard Console File Screen

console screen

The _______ command is another filter that is used to print the selected output of a file onto the screen. ls -l cp cut ls

cut

The _________ command is another filer that converts tabs to spaces, without affection the source file. By default, a tab consists of eight spaces. cut ls ls -l expand cp

expand

The _______ command is used to define the uniform spacing between words and sentences. cp ls -l fmt cut expand unexpand

fmt

The _____ loop runs through a list of values in a list until the time list values are exhausted. case....esac while loop if....else for loop

for loop

The ______ statements are mainly used for making a decision and therefore, are known as decision-making statements. for loop until loop while loop if....else case....esac

if....else

We asked the user to enter a positive or negative number and used 4 as an example. Given what you know about the script, the number 5 would be classified as a ______ number. negative positive prime scope

positive

The | (pipe) metacharacter takes the stdout of a command and sends it to another command as ______.

stdin