-sharp!/bin/bash

file_name2=`date +%Y%m%d%H%M%S`
mkdir    /home/sql_bak/user_bak/$file_name2
chmod   7777        /home/sql_bak/user_bak/$file_name2

-sharp-sharp-sharp-sharp
arr_string=(users payrecord_fruitcoin yamirecord vipexam_record stream_order ios_pay)

for data in ${arr_string[@]}
do
mysqldump -hrm-&&&&&&com -ubi&&&&&&jy -pZho&&&&&9xx 2>/dev/null --set-gtid-purged=off     ${data}    > /home/sql_bak/user_bak/$file_name2/${data}.sql
done

above is the backup script. If executes the script manually, the backup can be successful .

but.
all the files backed up by joining scheduled tasks are empty .

the figure is as follows:

results of manual backups
..]

:

: