如何在脚本中使用条件'and'条件？

Question

我正在尝试检查这两个条件是否都返回预期值。我想确保在继续之前两者都返回预期值......我有问题的台词是：if [ [ $ansmob = "y" ] || [ $flagbook != "1" ] ];

read -r -p "Would you like to add $site.booking.local as well? [y/n] " ansbook
        if [ $ansbook = "y" ];
                then sed "s/ServerAlias.*/& $site.booking.local/" -i $workdir/$site$dom.conf
                flagbook="1"
        fi
read -r -p "Would you like to add m.$site.booking.local? [y/n] " ansmob
        if [ [ $ansmob = "y" ] || [ $flagbook != "1" ] ];
                then sed "s/& $site.booking.local/& $site.booking.local m.$site.booking.local/" -i $workdir/$site$dom.conf
                else
                sed "s/ServerAlias.* /& m.$site.booking.local/" -i $workdir/$site$dom.conf
                flagmobile="1"
        fi

Answer 1

替换

if [ [ $ansmob = "y" ] || [ $flagbook != "1" ] ];

跟

if [ "$ansmob" = "y" ] || [ "$flagbook" != "1" ]

Answer 2

使用 Bash 的双括号，您可以使用 && 和 ||

if [[ $ansmob = "y" || $flagbook -ne 1 ]]

在

双括号内，并非绝对需要引用变量：此命令在计算具有空变量的表达式时很聪明。

Answer 3

二进制&&运算符是AND操作的语法。