如何在脚本中使用条件“和”条件？

Question

I'm trying to check if both conditions return the expected values. I want to be sure that both return the expected value before continuing... My problematic line is: if [ [ $ansmob = "y" ] || [ $flagbook != "1" ] ]; 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

Replace

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

with

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

Answer 2

with bash's double brackets, you can use && and ||

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

Within double brackets, it's not strictly necessary to quote the variables: this command is smart about evaluating expressions with empty variables.

Answer 3

二进制&&运算符是AND运算的语法。