Bash -Substract -Variante
$((expression))
$a=5
yourname_$(($a-1))
#will give
yourname_4
gamma_new="$(($gamma_t-360))"
num2="$(($num1+num2))"
Hutch Polecat
$((expression))
$a=5
yourname_$(($a-1))
#will give
yourname_4
gamma_new="$(($gamma_t-360))"
num2="$(($num1+num2))"