Linux 103 - Chapter 1

Question 1

In Bash, inserting 1>&2 after a command redirects

Answer 1

Standard output to standard error

Question 2

What characters can be combined with a separator string in order to read from the current input source until the separator string, which is on a separate line and without any trailing spaces, is reached?

Answer 2

<

Question 3

What command will print to standard out only the lines that do not begin with # in the file foobar?

Answer 3

/bin/grep -v ^# foobar

Question 4

Which command sets the Bash variable named TEST with the content FOO?

Answer 4

TEST=”FOO”

Question 5

When given the following command line.

echo “foo bar” | tee bar | cat

What output is created?

Answer 5

foo bar

Question 6

Give two examples of valid stream redirection operators within Bash? (Two answers)

Answer 6

< ;&raquo_space;

Question 7

Which command shows the definition of a given shell command?

Answer 7

type

Question 8

Which shell built-in command can be used to create a shortcut or pseudonym for a longer command in a shell such as Bash?

Answer 8

alias

Question 9

Which command line redirection character instructs the shell to read from the current input source until a specific word, on a separate line and without and trailing spaces, is reached?

Answer 9

<

Question 10

Which file, located in the user home directory, is used to store the Bash history?

Answer 10

.bash_history

Question 11

Which shell redirection will write standard output and standard error output to a file named filename?

Answer 11

> filename 2>&1

Question 12

Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.)

Answer 12

HISTFILE