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Shell Programming and Scripting

Read input in shell script

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# 1  
Old 06-17-2015
Read input in shell script
I want to write a script that read the input to variable.
I want the input screen to have 2 lines, where the values already input will appear above the input line
for example if I want to input the words below:
Code:
like
love
live
life

The screen will display like this:
1. Before any input
Code:
Input words:

2. after entering
Code:
like

:
Code:
like 
Input words:

3. after entering
Code:
life

:
Code:
like love live life
Input words:

I have tried the following but it keeps giving multiple lines, any ideas?
Code:
#!/usr/bin/ksh
n=2
p=""
while [[ $n != "x" ]]
do
    echo "Input words: \c"
    read n
    p=$p" "$n
echo $p
done

Last edited by aydj; 06-17-2015 at 09:29 AM..
# 2  
Old 06-17-2015
You'll need man console_codes to position the cursor arbitrarily on the screen, but be aware that not all systems and terminal emulators accept these. Alternatively, try man termcap / terminfo.
You should prefer printf over echo, btw.
# 3  
Old 06-17-2015
Hiya

Code:
output=""
input=""
while
    echo "$output"
    read input
do output+=" $input"
    # Well this goes forever until you hit CTRL+C
done

hth
# 4  
Old 06-17-2015
Thanks you for your effort, but I dont want multiple lines on the screen.
# 5  
Old 06-17-2015
OSX 10.7.5, default bash terminal...
Code:
#!/bin/bash
n=2
p=""
while [[ $n != "x" ]]
do
    read -p "Input words:- " n
    clear
    p=$p" "$n
    echo "$p "
done

This will print on the top line...

EDIT:
I have just noticed it is calling ksh, apologies chaps...
The bash version works...
Last edited by wisecracker; 06-17-2015 at 09:22 AM.. Reason: See above...
# 6  
Old 06-17-2015
I dont want my screen to look like this:
Code:
Input words: like
like
Input words: love
like love
Input words: live
like love live
Input words: life
like love live life
Input words:

I want it to look like this after :
Code:
ike love live life
Input words:

# 7  
Old 06-17-2015
I thought you said the bash version worked?
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