How to make an animated bash shell prompt for the terminal?

Question

I want to make an animated curser prompt in the terminal(Ubuntu 14.04),
so i make this script:

while [ : ]
do
    echo -ne \'|\\r\'
    sleep 0.3
    echo -         


        

Answer 1

echo -ne '一\r'
#         ^
#         |
#         \--- problem

This character should be a hyphen, but is actually something called CJK Ideograph, First

Answer 2

save and restore cursor position instead of \r. Move to required column location where you want animation between saving and restoring cursor position.

For cursor movement refer http://tldp.org/HOWTO/Bash-Prompt-HOWTO/x361.html

modified script:

s="\033[s"
u="\033[u"

# Position of column
# As per my command prompt, i want 15th column( so 14C)
pos="\033[1000D\033[14C"
while [ : ]
do
    eval echo -ne '$s$pos\|$u'
    sleep 0.3
    eval echo -ne '$s$pos/$u'
    sleep 0.3
    eval echo -ne '$s$pos一$u'
    sleep 0.3
    eval echo -ne '$s$pos\\\\$u'
    sleep 0.3
    eval echo -ne '$s$pos\|$u'
    sleep 0.3
    eval echo -ne '$s$pos\$$u'
    sleep 0.3
done

[root@hello ~]|

As you were using, it works with last line in .bashrc

Thanks