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public text v1 · immutabletest_if_number()
# usage: test_if_number INPUt
# returns true or false exit code ( 0 or 1 )
{
[[ $1 && $1 =~ ^[-+]?[0-9]*\(\.[0-9]+\)?$ ]]
}test_if_number()
# usage: test_if_number INPUt
# returns true or false exit code ( 0 or 1 )
{
[[ $1 && $1 =~ ^[-+]?[0-9]*\(\.[0-9]+\)?$ ]]
}