Continue output on same line

Question

Hello,

Want to do a fancy effect by printing [OK] at the end of the last line when a task is finished.

Got this:

echo "$0: Starting backup process in '$backupdir'... " 
sleep 3
echo '[OK]'

I tried different things at the end of the first echo, at the beginning of the second like \r, \c, \, Googled it... No good.

I want it to output this:

./backup.sh: Starting backup process in '/backup'...

... And 3 sec later, add the [OK]:

./backup.sh: Starting backup process in '/backup'... [OK]

Thanks,

Answer 1

echo -n "$0: Starting backup process in '$backupdir'... " 

Answer 2

use the more portable printf

Answer 3

echo -n hello