我已经写了一个bash脚本，它包括一个脚本检查文件大小的部分，如果超过2gb，那么它将启动一个屏幕会话并开始导入db转储文件。但是，当脚本执行到特定的部分时，它就不起作用了。意味着，在导入db dump之前，脚本正在完成执行。我猜这是因为screen会话没有等待db dump import命令执行完成。脚本看起来不会那么专业，因为我是shell脚本的初学者，我也不太擅长编码，请不要介意。
注意：我已经创建了一个套接字号为24602的屏幕会话，我正在尝试在该会话中执行db dump import命令
脚本

# !/bin/bash

cd /case_data
echo "Conditions:
        1.DB dump file should be there in /case_data/<case number>/ location
        2.DB dump file should end with extension .sql"

        read -p "Please enter a case number for which you need to update the DB file:" casenum

if [[ -z "$casenum" ]] ; then
        echo 'Exiting automation as there is no user INPUT. Hasta La Vista!!'
        return 0

elif [[ ${#casenum} -ne 5 ]]; then
        echo "Error: Case number should contain 5 characters. Please enter the case number again!!"
        return 0

elif [[ $casenum == *['!'@#\$%^\&*()_+]* ]]; then
        echo "Error: Special characters are not allowed. Please enter the case number again!!"
        return 0

elif [ -e "$casenum" ]; then

        echo "Modifying the DB dump file for the case number $casenum"
        cd /case_data/$casenum
        filesize=`du -h --block-size=G *.sql | head -c 1`
       `sed -i '1s/^/SET autocommit=0;\n/' *.sql`
       `echo "COMMIT;" >> *.sql`
        mv *.sql c$casenum.sql
        echo "DB dump file modification completed!!"
        echo "Initiating customer DB dump import to the DB c$casenum"
if [ $filesize -ge 2 ]; then
        echo "Customer DB greater than 2 GB, started a screen session"
        echo "Customer DB import started. Please wait till the import is completed"
        screen -S 24602 -X 'mysql -ss -N -uroot -ppassword -e "use c$casenum;source /case_data/$casenum/c$casenum.sql";'

else
        echo "Customer DB less than 2 GB so skipping screen session!!!"
        echo "Customer DB import started. Please wait till the import is completed"
        mysql -ss -N -uroot -ppassword -e "use c$casenum;source /case_data/$casenum/c$casenum.sql;"
        echo "Customer DB import completed successfully!!!"
fi

else

        echo "Directory does not exist, please check the case number entered"

fi