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When you use $variable, you're telling the shell, "Give me the value stored in the variable named variable." For instance:

name="Yesh"
echo "$name"

This will print: Yesh

When you use ${variable}2, you're saying, "Give me the value stored in variable and then add 2 right after it." For example:

name="Yesh"
echo "${name}2"

This will print: Yesh2

The curly braces, {}, are used to make sure the shell knows exactly where the variable name ends. This is important when you're combining a variable with other text. Without the braces, the shell might get confused and look for a variable name that includes the extra characters.

Example: Imagine you have a variable called file and you want to add a file extension to it:

file="document"
echo "$file.txt"     # This will be a problem because the shell will look for a variable named 'file.txt'
echo "${file}.txt"   # This will work correctly and print 'document.txt'

Using the braces helps the shell understand where the variable name stops and the extra text starts.

So, in short:

$variable: Just gives you the value of variable. ${variable}2: Gives you the value of variable with 2 added to the end. Using ${} helps avoid confusion and errors when you're mixing variables with other text.

When you use $variable, you're telling the shell, "Give me the value stored in the variable named variable." For instance:

name="Yesh"
echo "$name"

This will print: Yesh

When you use ${variable}2, you're saying, "Give me the value stored in variable and then add 2 right after it." For example:

name="Yesh"
echo "${name}2"

This will print: Yesh2

The curly braces, {}, are used to make sure the shell knows exactly where the variable name ends. This is important when you're combining a variable with other text. Without the braces, the shell might get confused and look for a variable name that includes the extra characters.

Example: Imagine you have a variable called file and you want to add a file extension to it:

file="document"
echo "$file.txt"     # This will be a problem because the shell will look for a variable named 'file.txt'
echo "${file}.txt"   # This will work correctly and print 'document.txt'

Using the braces helps the shell understand where the variable name stops and the extra text starts.

So, in short:

• $variable: Just gives you the value of variable.
• ${variable}2: Gives you the value of variable with 2 added to the end.
• Using ${} helps avoid confusion and errors when you're mixing variables with other text.

When you use $variable, you're telling the shell, "Give me the value stored in the variable named 'variable'." For instance:

name="Yesh"
echo $name

This will print: Yesh

When you use ${variable}2, you're saying, "Give me the value stored in 'variable' and then add '2' right after it." For example:

name="Yesh"
echo ${name}2

This will print: Yesh2

The curly braces {} are used to make sure the shell knows exactly where the variable name ends. This is important when you're combining a variable with other text. Without the braces, the shell might get confused and look for a variable name that includes the extra characters.

Example Imagine you have a variable called file and you want to add a file extension to it:

file="document"
echo $file.txt     # This will be a problem because the shell will look for a variable named 'file.txt'
echo ${file}.txt   # This will work correctly and print 'document.txt'

Using the braces helps the shell understand where the variable name stops and the extra text starts.

So, in short:

$variable: Just gives you the value of variable. ${variable}2: Gives you the value of variable with 2 added to the end. Using ${} helps avoid confusion and errors when you're mixing variables with other text.

When you use $variable, you're telling the shell, "Give me the value stored in the variable named variable." For instance:

name="Yesh"
echo "$name"

This will print: Yesh

When you use ${variable}2, you're saying, "Give me the value stored in variable and then add 2 right after it." For example:

name="Yesh"
echo "${name}2"

This will print: Yesh2

The curly braces, {}, are used to make sure the shell knows exactly where the variable name ends. This is important when you're combining a variable with other text. Without the braces, the shell might get confused and look for a variable name that includes the extra characters.

Example: Imagine you have a variable called file and you want to add a file extension to it:

file="document"
echo "$file.txt"     # This will be a problem because the shell will look for a variable named 'file.txt'
echo "${file}.txt"   # This will work correctly and print 'document.txt'

Using the braces helps the shell understand where the variable name stops and the extra text starts.

So, in short:

$variable: Just gives you the value of variable. ${variable}2: Gives you the value of variable with 2 added to the end. Using ${} helps avoid confusion and errors when you're mixing variables with other text.

When you use $variable, you're telling the shell, "Give me the value stored in the variable named 'variable'." For instance:

name="Alice" echo $name This will print: Alice

When you use ${variable}2, you're saying, "Give me the value stored in 'variable' and then add '2' right after it." For example:

name="Alice" echo ${name}2 This will print: Alice2

The curly braces {} are used to make sure the shell knows exactly where the variable name ends. This is important when you're combining a variable with other text. Without the braces, the shell might get confused and look for a variable name that includes the extra characters.

Example Imagine you have a variable called file and you want to add a file extension to it:

file="document" echo $file.txt # This will be a problem because the shell will look for a variable named 'file.txt' echo ${file}.txt # This will work correctly and print 'document.txt' Using the braces helps the shell understand where the variable name stops and the extra text starts.

So, in short:

$variable: Just gives you the value of variable. ${variable}2: Gives you the value of variable with 2 added to the end. Using ${} helps avoid confusion and errors when you're mixing variables with other text.

When you use $variable, you're telling the shell, "Give me the value stored in the variable named 'variable'." For instance:

name="Yesh"
echo $name

This will print: Yesh

When you use ${variable}2, you're saying, "Give me the value stored in 'variable' and then add '2' right after it." For example:

name="Yesh"
echo ${name}2

This will print: Yesh2

The curly braces {} are used to make sure the shell knows exactly where the variable name ends. This is important when you're combining a variable with other text. Without the braces, the shell might get confused and look for a variable name that includes the extra characters.

Example Imagine you have a variable called file and you want to add a file extension to it:

file="document"
echo $file.txt     # This will be a problem because the shell will look for a variable named 'file.txt'
echo ${file}.txt   # This will work correctly and print 'document.txt'

Using the braces helps the shell understand where the variable name stops and the extra text starts.

So, in short:

$variable: Just gives you the value of variable. ${variable}2: Gives you the value of variable with 2 added to the end. Using ${} helps avoid confusion and errors when you're mixing variables with other text.