取最右侧字符

groupN=`sqlplus -S sys/${Passwd} as sysdba <<EOF
set echo off feedback off heading off underline off;
select group# from v\\$log;
exit;
EOF`
#GroupNo=`echo ${groupN: -1}`
tmpGrpNo=`echo $groupN | sed -n '$p'`  <===将一行一行，变成一行，并以空格隔开。
GroupNo`echo ${tmpGrpNo} |awk -F " " '{print $NF}'`  <====取最右侧的字符
echo "There are ${GroupNo} existing redo groups. Start to add extra redo log."

 

来源：CSDN

作者：mygodhome

链接：https://blog.csdn.net/mygodhome/article/details/103715141