Calculate day number from date function fg: no job control

Question

Calculate day number from date function fg: no job control

I have a function to calculate the number of days based on three parameters d, m, y

this is a function

function getDate (){
    d=$1
    m=$2
    y=$3
    m=$((m+9)) % 12
    y=$((y - m/10))
    return $((365*y + y/4 - y/100 + y/400 + (m*306 + 5)/10 + ( d - 1 )))
}

Call for example:

getDate 01 01 2015

The problem is that I always get line 8: fg: no job control

which is this linem=$((m+9)) % 12

+3

unix bash shell osx-yosemite

Ale_ May 15 '15 at 16:43

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1 answer

Cyrus · Accepted Answer · 2015-05-15T16:48:18+0000

Replace

m=$((m+9)) % 12

by

m=$(((m+9)%12))

Use $((expression))

for calculations.

return

can only return values between 0 and 255. In your case, I suggest replacing return

with echo

.

Calculate day number from date function fg: no job control

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