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

使用grep过滤

mysql -uroot -poRcl_123 -Dmysql -e "show processlist\G;"| egrep "Host\:" | awk -F: '{ print $2 }'| sort | uniq -c | grep 192.168.10.45

//查看占用的总的数据库连接数

mysql -uroot -poRcl_123 -Dmysql -e "select count(*) from information_schema.PROCESSLIST;"

select count(*) from information_schema.PROCESSLIST

mysql -uroot -poRcl_123 -Dmysql -e "show global status like 'Max_used_connections';"

//循环输出

while true;do mysql -uroot -poRcl_123 -Dmysql -e "show processlist\G;"| egrep "Host\:" | awk -F: '{ print $2 }'| sort | uniq -c;echo "******************************************";sleep 1;done

mysql -uroot -poRcl_123 -Dmysql -e "show variables"  | grep max_connections

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

netstat -anp | grep 3306 | grep 192.168.10.99 | wc -l

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

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

mysql -uroot -poRcl_123 -Dmysql -e "select SUBSTRING_INDEX(host,':',1) as ip , count(*) from information_schema.processlist group by ip;"

mysql -uroot -poRcl_123 -Dmysql --skip-column-names -e"show processlist;"|awk '{print $3}'|awk -F":" '{print $1}'|sort|uniq -c

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