2-5 位置参数变量
2021-01-05
#!/usr/bin/env bash arg1=$1 arg2=$2 # ✅ num=$(($arg1 + $arg2)) # ✅ str=$((arg1 + arg2)) echo "num: \$arg1 + \$arg2 = $num" # -e 换行 echo -e "\n" echo "str: arg1 + arg2 = $str" # DEMO # ./str.sh 1 2 # num: $arg1 + $arg2 = 3 # str: arg1 + arg2 = 3
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