Help with a shell script

vega2k · 07-12-2008, 04:11 PM

Hello,
I need some help with a shell script and hope you could help me.

I want the script to take the input(text string) and then print it out but remove the first character every time until only there is 10 characters left in the text string.

Ex.
Text input: just a random input
Printed:
ust a random input
st a random input
t a random input
a random input
a random input
random input
random input
andom input
ndom input

Tinkster · 07-12-2008, 04:36 PM

Sounds very much like homework to me ...

ghostdog74 · 07-12-2008, 09:02 PM

Quote:

Originally Posted by vega2k

Hello,
I need some help with a shell script and hope you could help me.

I want the script to take the input(text string) and then print it out but remove the first character every time until only there is 10 characters left in the text string.

Ex.
Text input: just a random input
Printed:
ust a random input
st a random input
t a random input
a random input
a random input
random input
random input
andom input
ndom input

its definitely homework to me. however, i will just guide you to a start. To cut strings, look here under substring extraction, or man cut.
You most certainly need a loop, so see here for how to construct a loop. You may also need a character count of the whole string as a counter. man wc for that

vega2k · 07-13-2008, 09:52 AM

It's not homework but I can really agree with you that it look like that. (I've had a *nix class long ago doesn't rember much tought)
I've tried to figuring it out my self but I cant rember how to do it.
Something like this, going to look at ghostdog74 later and se if I can solve it. Thanks for for it btw it cant do more then help me. ^^

$in="just a random input";
$i="wc -c `$in`";
while [$i <= 10 ] do
echo $in | -w`$i`-;
$i++;
done

Mr. C. · 07-13-2008, 02:34 PM

Hint: sed.

jcookeman · 07-15-2008, 07:41 AM

Code:

#!/usr/bin/env bash
read -p "Enter random string: " STRING
while [ "${#STRING}" -gt "10" ]
do
     STRING=${STRING#?}
     echo $STRING
done
exit 0