greycat 1178721456 learn Obsolete, deprecated syntax for math. Don't use it. Use $((...)) instead. geirha 1294676882 forget geirha 1294676904 learn $[...] is an obsolete, deprecated syntax for math. Don't use it. Use $((...)) instead. emanuele6 1628838155 forget geirha 1628838163 learn $[...] is an obsolete, deprecated syntax for math. Don't use it. Use $((...)) instead. https://lists.gnu.org/archive/html/bug-bash/2012-04/msg00034.html