It likely is part of a script.... ( I am guessing here....)
It is a statement that finds the number of elements in an array....meaining
create a file test.sh and write in it :
Code:
custom_prompt[0]=5
custom_prompt[1]=3
custom_prompt[2]=8
x=${#custom_prompt[*]}
echo $x
It will give you '3'
then ,
Code:
#chmod 700 test.sh ; ./test.sh
delete the first line from the file and run it again.
it will give you '2'...
Have Fun
MM
x=${#custom_prompt[*]}