bash比较多列的数值

我有一个变量，它输出两列： 回显“$SIZE\u到\u插座”

我的gloal基本上是比较这两个数字并打印一个按摩

例如：如果他们匹配：成功：A（256）与B（256）相等

或错误：A（256）不是euqal到B（256），如果有，则数字不是euqal

我的代码是：

while IFS= read -r i;do
        SIZE=$(echo "$i"|awk '{print $2}')
        SOCKET=$(echo "$i"|awk '{print $1}')
        if [[ "$SOCKET" = "A" ]] ; then
                SOCKET_A="$SIZE"
        elif [[ "$SOCKET" = "B" ]] ; then
               SOCKET_B="$SIZE"
        fi

        if [[ $SOCKET_A -ne $SOCKET_B]];then
            echo "error: SOCKET_A is not equal to SOCKET_B"
        elif [[ $SOCKET_A -eq $SOCKET_B]];then
            cho "success: SOCKET_A is  equal to SOCKET_B"
        fi
done <<< "$SIZE_TO_SOCKET"

而IFS=read-ri；做
大小=$（回显“$i”| awk'{print$2}'）
套接字=$（回显“$i”| awk'{print$1}'）
如果[“$SOCKET”=“A”]；然后
插座A=“$SIZE”
elif[“$SOCKET”=“B”]；然后
插座B=“$SIZE”
fi
如果[$SOCKET_A-ne$SOCKET_B]]；然后
echo“错误：套接字A不等于套接字B”
elif[$SOCKET_A-eq$SOCKET_B]]；然后
cho“成功：插座A等于插座B”
fi
完成
用您的输入替换
input
变量，此脚本输出

success: A(256) is equal to B(256)

对于两个相同的数字或

error: A(257) is not equal to B(256)

对于两个不同的数字。
这是我得到的非常简单的解决方案：

line1=$(echo "$SIZE_TO_SOCKET" | awk 'NR == 1')
line2=$(echo "$SIZE_TO_SOCKET" | awk 'NR == 2')

key1=$(echo "$line1" | cut -d ' ' -f 1)
value1=$(echo "$line1" | cut -d ' ' -f 2)

key2=$(echo "$line2" | cut -d ' ' -f 1)
value2=$(echo "$line2" | cut -d ' ' -f 2)

if [[ $value1 -eq $value2 ]]; then
    echo "Success: $key1($value1) is equal to $key2($value2)"
else
    echo "Error: $key1($value1) is not equal to $key2($value2)" 
fi

您的代码有什么问题？：

您的代码“更正”为：

SIZE_TO_SOCKET=$(printf '41203235360a42203235360a' | xxd -p -r)

while IFS= read -r i;do
        SIZE=$(echo "$i"|awk '{print $2}')
        SOCKET=$(echo "$i"|awk '{print $1}')
        if [[ "$SOCKET" = "A" ]] ; then
                SOCKET_A="$SIZE"
        elif [[ "$SOCKET" = "B" ]] ; then
               SOCKET_B="$SIZE"
        fi

        if [[ $SOCKET_A -ne $SOCKET_B ]] ; then
                echo "error: SOCKET_A is not equal to SOCKET_B"
        elif [[ $SOCKET_A -eq $SOCKET_B ]] ; then
                echo "success: SOCKET_A is  equal to SOCKET_B"
        fi  
done <<< "$SIZE_TO_SOCKET"

如果使用bash-x脚本

，您将得到：

++ printf 41203235360a42203235360a
++ xxd -p -r
+ SIZE_TO_SOCKET='A 256
B 256'
+ IFS=
+ read -r i
++ echo 'A 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'A 256'
++ awk '{print $1}'
+ SOCKET=A
+ [[ A = \A ]]
+ SOCKET_A=256
+ [[ 256 -ne '' ]]
+ echo 'error: SOCKET_A is not equal to SOCKET_B'
error: SOCKET_A is not equal to SOCKET_B
+ IFS=
+ read -r i
++ echo 'B 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'B 256'
++ awk '{print $1}'
+ SOCKET=B
+ [[ B = \A ]]
+ [[ B = \B ]]
+ SOCKET_B=256
+ [[ 256 -ne 256 ]]
+ [[ 256 -eq 256 ]]
+ echo 'success: SOCKET_A is  equal to SOCKET_B'
success: SOCKET_A is  equal to SOCKET_B
+ IFS=
+ read -r i

++ printf 41203235360a42203235360a
++ xxd -p -r
+ SIZE_TO_SOCKET='A 256
B 256'
+ IFS=
+ read -r i
++ echo 'A 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'A 256'
++ awk '{print $1}'
+ SOCKET=A
+ [[ A = \A ]]
+ SOCKET_A=256
+ IFS=
+ read -r i
++ echo 'B 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'B 256'
++ awk '{print $1}'
+ SOCKET=B
+ [[ B = \A ]]
+ [[ B = \B ]]
+ SOCKET_B=256
+ IFS=
+ read -r i
+ [[ 256 -ne 256 ]]
+ [[ 256 -eq 256 ]]
+ echo 'success: SOCKET_A is  equal to SOCKET_B'
success: SOCKET_A is  equal to SOCKET_B

仔细阅读；你的逻辑有错误

这可能是您的代码的更正版本：

SIZE_TO_SOCKET=$(printf '41203235360a42203235360a' | xxd -p -r)

while IFS= read -r i;do
        SIZE=$(echo "$i"|awk '{print $2}')
        SOCKET=$(echo "$i"|awk '{print $1}')
        if [[ "$SOCKET" = "A" ]] ; then
                SOCKET_A="$SIZE"
        elif [[ "$SOCKET" = "B" ]] ; then
               SOCKET_B="$SIZE"
        fi
done <<< "$SIZE_TO_SOCKET"

if [[ $SOCKET_A -ne $SOCKET_B ]] ; then
        echo "error: SOCKET_A is not equal to SOCKET_B"
elif [[ $SOCKET_A -eq $SOCKET_B ]] ; then
        echo "success: SOCKET_A is  equal to SOCKET_B"
fi

如果您使用

bash-x您的脚本

，您将得到：

++ printf 41203235360a42203235360a
++ xxd -p -r
+ SIZE_TO_SOCKET='A 256
B 256'
+ IFS=
+ read -r i
++ echo 'A 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'A 256'
++ awk '{print $1}'
+ SOCKET=A
+ [[ A = \A ]]
+ SOCKET_A=256
+ [[ 256 -ne '' ]]
+ echo 'error: SOCKET_A is not equal to SOCKET_B'
error: SOCKET_A is not equal to SOCKET_B
+ IFS=
+ read -r i
++ echo 'B 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'B 256'
++ awk '{print $1}'
+ SOCKET=B
+ [[ B = \A ]]
+ [[ B = \B ]]
+ SOCKET_B=256
+ [[ 256 -ne 256 ]]
+ [[ 256 -eq 256 ]]
+ echo 'success: SOCKET_A is  equal to SOCKET_B'
success: SOCKET_A is  equal to SOCKET_B
+ IFS=
+ read -r i

++ printf 41203235360a42203235360a
++ xxd -p -r
+ SIZE_TO_SOCKET='A 256
B 256'
+ IFS=
+ read -r i
++ echo 'A 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'A 256'
++ awk '{print $1}'
+ SOCKET=A
+ [[ A = \A ]]
+ SOCKET_A=256
+ IFS=
+ read -r i
++ echo 'B 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'B 256'
++ awk '{print $1}'
+ SOCKET=B
+ [[ B = \A ]]
+ [[ B = \B ]]
+ SOCKET_B=256
+ IFS=
+ read -r i
+ [[ 256 -ne 256 ]]
+ [[ 256 -eq 256 ]]
+ echo 'success: SOCKET_A is  equal to SOCKET_B'
success: SOCKET_A is  equal to SOCKET_B

---

您在最后一个

elif

中有一个输入错误：is echo；使用：

bash-x VALID\u PATH\u运行脚本，以查看bash实际比较的内容
success: SOCKET_A is  equal to SOCKET_B

++ printf 41203235360a42203235360a
++ xxd -p -r
+ SIZE_TO_SOCKET='A 256
B 256'
+ IFS=
+ read -r i
++ echo 'A 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'A 256'
++ awk '{print $1}'
+ SOCKET=A
+ [[ A = \A ]]
+ SOCKET_A=256
+ IFS=
+ read -r i
++ echo 'B 256'
++ awk '{print $2}'
+ SIZE=256
++ echo 'B 256'
++ awk '{print $1}'
+ SOCKET=B
+ [[ B = \A ]]
+ [[ B = \B ]]
+ SOCKET_B=256
+ IFS=
+ read -r i
+ [[ 256 -ne 256 ]]
+ [[ 256 -eq 256 ]]
+ echo 'success: SOCKET_A is  equal to SOCKET_B'
success: SOCKET_A is  equal to SOCKET_B