Assign the output of command to variable

Question

I have to cut the string after the white-space and store the value before white-space. My example script is show below

tString="This is my name"
echo $tString | cut -d' ' -f1

output:

This

Now I want to assign this output value to the variable. My script is

tString="This is my name"
var=$($tString | cut -d' ' -f1)

It shows error.Error message is

This: command not found

Iam new to bash shell script. Anyone Knows how to do this.

Answer 1

Using parameter expansion:

tString="This is my name"
var="${tString%% *}"
echo "$var"
This

Answer 2

Add an echo:

tString="This is my name"
var=$(echo $tString | cut -d' ' -f1)

(Also mentioned here 2 seconds before I posted my answer)