{echo 3.14159 | %.2f}
3.14
{echo 5 | %05.2f}
05.00
{echo 42 | %05d}
00042
{echo 42 | %+d}
+42
{echo 255 | %x} {echo 255 | %X}
ff FF
{echo 1234.5 | %e}
1.234500e+3
{echo 0.256 | * 100 | %.1f | . '%'}
25.6%