String variables in Bash Scripting - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a string variable in bash scripting?

A string variable in bash scripting is a named storage that holds a sequence of characters, like words or sentences, which you can use and change in your script.

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How do you assign a string value to a variable in bash?

You assign a string to a variable by writing the variable name, an equal sign, and the string without spaces around the equal sign. For example: name="Alice".

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How do you access the value of a string variable in bash?

You access the value by putting a dollar sign before the variable name, like $name. This tells the script to use the stored string.

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What happens if you put spaces around the equal sign when assigning a string variable in bash?

Bash will give an error because spaces are not allowed around the equal sign when assigning variables. It expects var=value without spaces.

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How can you include spaces inside a string variable in bash?

You put the string inside quotes, like greeting="Hello world". Quotes keep the spaces as part of the string.

How do you assign the string 'hello' to a variable named msg in bash?

A msg="hello"

B msg = "hello"

C msg=hello

D msg:hello

In bash, assignment must have no spaces around '=', and strings with spaces or special characters should be in quotes. So msg="hello" is correct.

What does $name mean in a bash script?

A It creates a new variable called name

B It deletes the variable name

C It accesses the value stored in the variable name

D It prints the word '$name'

The dollar sign before a variable name tells bash to use the value stored in that variable.

Which of these is a valid string variable assignment in bash?

A greeting = Hello

B greeting:Hello

C greeting=Hello World

D greeting="Hello World"

You must not have spaces around '=', and strings with spaces must be quoted. So greeting="Hello World" is valid.

What will happen if you run: name =John in bash?

A Variable name is set to 'John'

B Syntax error due to spaces around '='

C Variable name is set to '=John'

D Variable name is unset

Bash does not allow spaces around '=' in variable assignment, so this causes a syntax error.

How do you include spaces inside a string variable in bash?

A Use quotes around the string

B Use backslash before spaces

C Use parentheses around the string

D Spaces are not allowed in string variables

Putting the string inside quotes keeps spaces as part of the string value.

Explain how to create and use a string variable in bash scripting.

Think about how you store and then use a word or sentence in your script.

What common mistake should you avoid when assigning string variables in bash?

Remember how bash reads variable assignments carefully.