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command in variable

I am making a pipeline of several commands.
This is a part of my shell script.
-----------------------------------
array=(
"mkdir src"
"ls -l | grep tk_ > src/list"
)
len=${#array[*]}

i=0;
while [ $i -lt $len ]; do
echo ${array[$i]}
if !(${array[$i]}); then exit 1; fi;
let i++
done
---------------------------------------
"mkdir src" is working well but "ls -l | grep tk_ > src/list" does not work.
These are error messages.
-----------------------------------------
ls: cannot access |: No such file or directory
ls: cannot access grep: No such file or directory
ls: cannot access tk_: No such file or directory
ls: cannot access >: No such file or directory
ls: cannot access src/list: No such file or directory
-----------------------------------------

How can I solve this problem?

Thanks.

If you want the commands to work properly, then enclose them like this :

Code:

array=(

$(mkdir src)

$(ls -l | grep tk_ > src/list)

)

However, you won't get the echo you are expecting.

I think the commands in your code run at the moment when 'array' is created, not in the while loop.

Anyway thanks.