[SOLVED] Simple question about shell script

skiende74 · 06-22-2021, 05:44 PM

I want to do base64 encoding of some string 500 times repeatedly.
So I tried to use for loop, but I'm in trouble.

How do I save the result of base64 operation into variable?
I tried to this, but It didn't work.

k='string'
for i in $(seq 500)
do
k= (echo $k|base64)
done

The problem is 4th line.
echo $k|base64 do work,but k = echo $k|base64 don't work.
How do I save this operation result into k?

boughtonp · 06-22-2021, 06:28 PM

See Bash FAQ #2: How can I store the return value and/or output of a command in a variable?

skiende74 · 06-22-2021, 07:16 PM

Quote:

Originally Posted by boughtonp

See Bash FAQ #2: How can I store the return value and/or output of a command in a variable?

Thanks. It solved.
But I reallized that It is too slow, so I think I must use python.

pan64 · 06-23-2021, 02:12 AM

base encoding is slow itself, will not be [much] faster in python. But you can try. You can report back if that was the case.
If you want to speed it up you may need to run them parallel to each other.

boughtonp · 06-23-2021, 10:28 AM

Quote:

Originally Posted by skiende74

But I reallized that It is too slow

Too slow for what?

Wait... what are you even trying to do here?

Quote:

Originally Posted by skiende74

I want to do base64 encoding of some string 500 times repeatedly.

Why?

What do you think repeatedly applying base64 five hundred times will achieve?

For every possibility that comes to mind, you're doing it wrong, and the language you use wont change that.