How do I a obtain particular length of a string variable using a bash shell script?

shoebill

Usage is ${name:start:length}

If the length is no specified, it uses the rest of value.

declare -A MyBucketList
MyBucketList=([1]="The rain in Spain stays mainly on the plain" [2]="Go to Mars" [3]="Climb Mount Everest")
echo ${MyBucketList[1]:5}

Running the script gives the following results. The ra is excluded. Remember the count starts at zero.

$ ./associative_array.sh
in in Spain stays mainly on the plain

Change line 3 to echo ${MyBucketList[1]:5:10} and run the script again. Start from count 5 in the value, and the length of 10

$ ./associative_array.sh
in in Spai