How do I use an ANSI sequence to signify progress in Windows Terminal using Bash?

Question

PowerShell has a Write-Progress cmdlet that would update the Terminal icon to indicate progress.

I would like to do the same in Bash (and NOT exec powershell)

I think it is doable from the link

PowerShell displays certain information using ANSI escape sequences

So I was wondering what those ANSI sequences are.

Answer 1

The escape sequence is ESC ] 9 ; 4 ; st ; pr ST.

pr is the current progress. st can be one of the following:

Value	Purpose
0	Clear the progress indicator
1	Set the progress to pr %
2	Set the progress to pr % in error state
3	Set the progress indicator to indeterminate state
4	Set the progress to pr % in warning state

For example,

# Show indeterminate indicator for a couple seconds.
echo -en "\e]9;4;3;0\e\\"
sleep 3

# Run normally up to 40 %.
for i in {10..40..10}
do
    echo -en "\e]9;4;1;$i\e\\"
    sleep 1
done

# Continue in error state for a couple seconds.
for i in {50..70..10}
do
    echo -en "\e]9;4;2;$i\e\\"
    sleep 1
done

# Continue in warning state for a couple seconds.
for i in {80..100..10}
do
    echo -en "\e]9;4;4;$i\e\\"
    sleep 1
done

# Clear progress indicator.
echo -en "\e]9;4;0;0\e\\"