mysql -uroot -poRcl_123 -Dsnsdb_test -e "select host from user;"

mysql -uroot -poRcl_123 -Dmysql -e "show variables like ‘%Thread%‘;"

mysql -uroot -poRcl_123 -Dmysql -e "show status like ‘%Threads_connected%‘;"

mysql -uroot -poRcl_123 -Dmysql -e "show status;"

mysql -uroot -poRcl_123 -Dmysql -e "show variables like ‘max_connections‘;"

mysql -uroot -poRcl_123 -Dmysql -e "show full processlist \G;"

mysql -uroot -poRcl_123 -Dmysql -e "show processlist\G;"| egrep "Host\:" | awk -F: ‘{ print $2 }‘| sort | uniq -c

shell界面执行mysql命令