作業五: shell programming(for, if)
寫一個 shell 程式, 把參數中最大的數印出來.
For example:
$ ./ex5.sh
./ex5.sh numbers
$ ./ex5.sh 8 -1 9
9
./ex5.sh 8 -1 9 11 3 4
11
$
解答:
#!/bin/bash
max=0 #set default Max value
field=$# #total arg
for ((i=1; i<=field; i++))
do
if [ $1 -gt $max ]; then
max=$1
fi
shift
done
echo $max
執行結果:
