3.3 Sticking to the Script

Question 1

Multiple text processing commands are already built into the terminal, such as?

Answer 1

cut

awk

sed

Question 2

Using text manipulation commands within bash is preferable to using other programming languages for the following reasons:

Answer 2

Simplicity - Text processing is simpler and easier to learn than programming languages.

Convenience - Text processing is simpler and easier to learn than programming languages.

Compatibility - Text processing commands can easily be
added together to complete more advanced tasks—a complicated task with programming languages.

Question 3

sed stands for __________?

Answer 3

stream editor

Question 4

True or False?

sed command reads and edits text, line-by-line from an input stream. It is similar to the familiar find and replace feature in Windows systems.

Answer 4

True

Question 5

Syntax for sed is:

sed s/(_______)/(___________)/

Answer 5

sed s/(old value)/(replacement value)/

Question 6

Text Processing Commands manipulate text and simplify complex data by (3):

Answer 6

1. Substituting
2. Filtering lines of text
3. Delimiting text

Question 7

You need to replace the string ACCESS_ACCEPTED with LOGGED_IN to make the data consistent and allow for both datasets to be analyzed together. What command do you use?

Answer 7

sed

Question 8

The most basic sed capability is __________.

Answer 8

The most basic sed capability is string replacement.

Question 9

sed is a text processing utility that can help security professionals __________.

Answer 9

sed is a text processing utility that can help security professionals analyze data.

Question 10

AWK Operations:

a) __________________
b) __________________
c) __________________
d) __________________

Answer 10

a) Scans a file line by line
b) Splits each input line into fields
c) Compares input line/fields to pattern
d) Performs action(s) on matched lines

Question 11

AWK command is useful for:

a) __________________
b) __________________

Answer 11

a) Transform data files

b) Produce formatted reports

Question 12

Explain the awk command

Answer 12

Awk is a scripting language used for manipulating data and generating reports.

Question 13

The basic syntax of field separation with awk is:

awk -F (_______) ‘{print $(________r)}’

Answer 13

awk -F(delimiter) ‘{print $(field_number)}’

Question 14

Shell is a terminal program that assists in the interaction between _______ and ________.

Answer 14

Shell is a terminal program that assists in the interaction between user and the terminal.

Question 15

When a script is run, you can add an argument by placing it _______ the script name.

Answer 15

When a script is run, you can add an argument by placing it after the script name.