# create array. take care of the syntax .. spaces and parenthesis
ignoreTables=( visitors_15012016 visitors_Original )
 
# take an initial dummy empty variable for building the required string
# we need --ignore-table=tbl1 --ignore-table=tbl2 and so on...
ignoreString=''
# loop over the array. ${arr_var[@]} simply gives back all the elements of the array
for tbl in ${ignoreTables[@]}
do
    # build the string variable. with each pass of the loop, the new table name is appended to the old one along with the mysqldump switch "--ignore-table"
    ignoreString=${ignoreString}"--ignore-table="${tbl}" " 
done
# now at the end of loop, ignoreString contains
# "--ignore-table=tbl1 --ignore-table=tbl2"
# use it in the below command
 
mysqldump --log-error=/var/log/mysql-dump/dump.log -u USER -pPASSWD DBName $ignoreString | bzip2 > /path2file/file.sql.bz2