How do I kill all the processes in Mysql “show processlist”?

Question

Because I see a lot of processes there, and the \"time\" column shows big values for all of them.

Answer 1

Mass killing operation saves time. Do it in MySql itself:

Run these commands

mysql> select concat('KILL ',id,';') from information_schema.processlist
where user='root' and time > 200 into outfile '/tmp/a.txt';

mysql> source /tmp/a.txt;

Reference

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if you do not want to store in file, store in a variable

Just run in your command prompt

> out1=$(mysql -B test -uroot -proot --disable-column-names  -e "select concat('KILL ',id,';') from information_schema.processlist where user='root' and time > 200;")

> out2= $(mysql -B test -uroot -proot --disable-column-names  -e "$out1")