Question

我想比较3套然后我写一个bash脚本但结果是错误的。请指导我

#!/bin/bash
function SCORETYPE {
if [[ "$ENG1" < "$ENG2" || "$ENG3" < "$ENG4" || "$ENG5" > "$ENG6" ]]; then
    STYPE="A"
elif [[ "$ENG1" < "$ENG2" || "$ENG3" > "$ENG4" || "$ENG5" > "$ENG6" ]]; then
    STYPE="B"
elif [[ "$ENG1" > "$ENG2" || "$ENG3" < "$ENG4" || "$ENG5" < "$ENG6" ]]; then
    STYPE="C"
else
    STYPE="D"
fi

echo "$STYPE"
}

# DATA for  A
ENG1=10; ENG2=15; ENG3=5; ENG4=7; ENG5=45; ENG6=15
echo -n "Correct is A -- Answer is = "; SCORETYPE

# DATA for  B
ENG1=3; ENG2=10; ENG3=8; ENG4=7; ENG5=40; ENG6=38
echo -n "Correct is B -- Answer is = "; SCORETYPE

# DATA for  C
ENG1=12; ENG2=9; ENG3=6; ENG4=9; ENG5=32; ENG6=50
echo -n "Correct is C -- Answer is = "; SCORETYPE

# DATA for  D
ENG1=12; ENG2=9; ENG3=9; ENG4=8; ENG5=32; ENG6=50
echo -n "Correct is D -- Answer is = "; SCORETYPE

脚本

的结果

root @ proxy：/ tmp＃vi multiple_var_test＆amp;＆amp; ./multiple_var_test

正确是A - 答案是= A

正确是B - 答案是= A

正确是C - 答案是= A

正确是D - 答案是= A

Answer 1

使用((代替[[来评估算术表达式。

您还需要在条件中使用&&（和），而不是||（或）。

试试这个：

function SCORETYPE {
if (( ENG1 < ENG2 && ENG3 < ENG4 && ENG5 > ENG6 )); then
    STYPE="A"
elif (( ENG1 < ENG2 && ENG3 > ENG4 && ENG5 > ENG6 )); then
    STYPE="B"
elif (( ENG1 > ENG2 && ENG3 < ENG4 && ENG5 < ENG6 )); then
    STYPE="C"
else
    STYPE="D"
fi

echo "$STYPE"
}

（注意：在算术表达式中，没有必要使用$为变量添加前缀。）

Answer 2

你的逻辑错误 - 应该是AND而不是OR，你需要用下面的比较运算符代替：

function SCORETYPE {
if [[ "$ENG1" -lt "$ENG2" && "$ENG3" -lt "$ENG4" && "$ENG5" -gt "$ENG6" ]]; then
    STYPE="A"
elif [[ "$ENG1" -lt "$ENG2" && "$ENG3" -gt "$ENG4" && "$ENG5" -gt "$ENG6" ]]; then
    STYPE="B"
elif [[ "$ENG1" -gt "$ENG2" && "$ENG3" -lt "$ENG4" && "$ENG5" -lt "$ENG6" ]]; then
    STYPE="C"
else
    STYPE="D"
fi

echo "$STYPE"
}

Bash脚本多个字符串变量比较

2 个答案: