问将文本变量切成4个不同变量的正确方法

EN

#!/bin/sh

t_config=`cat moo`

echo "$t_config" | {
        INDEX=0
        NL="
"
        while read LINE; do
                case $LINE in
                        ("session writelock")
                                OUTPUT=""
                                ;;
                        ("session writeunlock")
                                let INDEX=$INDEX+1
                                VAR="b$INDEX"
                                eval "$VAR='$OUTPUT'"
                                OUTPUT=""
                                ;;
                        (*) OUTPUT="$OUTPUT$NL$LINE";;
                esac
        done

        # now do something with the variables
        echo "b1:$b1"
        echo "b2:$b2"
        echo "b3:$b3"
        echo "b3:$b4"
}