cat /usr/local/var/log/nginx/access.log|sort -nrk9|head -2
what I wonder about is sort-nrk9;
-nrk. I know what this 9 means. What does this 9 stand for?
here is the format of nginx log
log_format main "$remote_addr - $remote_user [$time_local] "$request" "
"$upstream_response_time "
"$status $body_bytes_sent "$http_referer" "
""$http_user_agent" "$http_x_forwarded_for"";sort the lines of the log file in reverse numerical order in the ninth column, and finally output the first two lines
in fact, there are three commands here: cat, sort, and head.
for you, 9 is the sorted column
has reference http://blog.chinaunix.net/uid.
this means sorting by the ninth column of each row
by the ninth column of each row
installation uses the kafka extension, starts the zookeeper,kafka service, but does not start. . zookeeper-server-start.sh usr kafka kafka-2.0.0-src config zookeeper.properties . kafka-server-start.sh usr kafka kafka-2.0.0-src config server.prop...
discuss a few questions, thank you! 1 the working principle of aof storage is used by Magi Redis? 2 how does aof rewrite work? In which processes the main thread and the generated new thread play a role respectively. ...