linux - Calculating rounded percentage in Shell Script without using "bc" -



linux - Calculating rounded percentage in Shell Script without using "bc" -

i'm trying calculate percentage of items in shell script. round off value, is, if result 59.5, should expect 60 , not 59.

item=30 total=70 percent=$((100*$item/$total)) echo $percent

this gives 42.

but actually, result 42.8 , round off 43. "bc" trick, there way without using "bc" ?

i'm not authorized install new packages. "dc" , "bc" not nowadays in system. should purely shell, cannot utilize perl or python scripts either

use awk (no bash-isms):

item=30 total=70 percent=$(awk "begin { pc=100*${item}/${total}; i=int(pc); print (pc-i<0.5)?i:i+1 }") echo $percent 43

linux shell percentage

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