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Shell Programming and Scripting

Maximum number from input by user

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# 15  
Old 05-01-2012
I want to read four number on one single line input by the user. Then I want to calculate the maximum number based on those four numbers.
# 16  
Old 05-01-2012
You would then use read with four variables, to get four numbers from 1 line without pressing enter.

Code:
read num1 num2 num3 num4

then some logic to find the highest one

Code:
max=$num1
for num in "$num2" "$num3" "$num4"; do
    [ "$num" -gt "$max" ] && max=$num
done

echo "Max: $max"

# 17  
Old 05-01-2012
or
Code:
read max other_nrs
for num in $other_nrs; do
  if [ $num -gt $max ]; then
    max=$num
  fi
done
echo "Max $max"

This User Gave Thanks to Scrutinizer For This Post:
neutronscott
# 18  
Old 05-02-2012
ah good idea. i've been using quoted arrays for such things that I did not even think to utilize word splitting to my advantage.
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