Find Length of Shell (Bash) Variable

I was building an automation and needed to find the length of the variable. After doing some research, I found that you can do that easily with the commands below.

$ myvar="some string"

$ size=${#myvar}

$ echo "$size"
11

First line creates and sets the variable.

Second line gets the length of the variable and sets it into a variable named "size"

Third line displays the length of the variable. Once you have the length of the variable set into a variable, then the length variable can be used in if conditions, for statements, or anywhere else that you can use a variable.


Last update: 2022-09-17
bash, shell, shell scripting, variables, scripting, automation