Shell Programming and Scripting

Hi everyone

i need one help don't know whether it is simple or difficult but not able to solve it.
here is the problem

suppose my code is

Code:

 
time_def=3
r=0
while [[ $r -lt ${time_def} ]]
do
echo "time left is $time_def "
((time_def=time_def-1))
done
 
and the output is
time left is 3
time left is 2
time left is 2

can we make the output in one line so that each time it does not echo the statement like

Code:

 
time left is 3

then instead of diaplaying "time left is 2" it display on the same line "time left is 2"

please help me in this

---------- Post updated at 10:51 AM ---------- Previous update was at 08:28 AM ----------

to be in simple language i want to display changing of time in only one line not in multiple lines.

can we do this?/

I suppose your script to be in bash, so
Position of the cursor in bash

Code:

echo -ne '\033[s\033[10;1HHello World\033[u'

See more there: Cursor Movement

@above
can u please explain the solution
yes the script is in bash
but the line which i want to update should be in single line..

The escape character \033[line;columnH allows you to set cursor position before writing actual text. -e option on echo tells bash that echo needs to parse escapes sequences.
Others escapes sequences can be found on the link in my previous post.

@above
thanks for ur reply...
but can u please elaborate in real time scenario like which i gave ...
because i have to implement that functionlity in my code...
please if u have time , can u tell me how to do this in above codel..
thanks in advance..

Code:

#!/bin/bash

time_def=3
r=0
echo
while ((r<time_def)); do
    echo -e "\033[1Atime left is $time_def"
    ((time_def--))
    sleep 1
done

exit 0

@above
thank u very much it works
thanks again