markdown [Linux命令] linux命令#linux #commands

Posted 2021-05-06

* ``` grep keyword /var/spool/cron/root | egrep -v ^# | grep -v ^$ | awk '{print $1,$2,$3,$4,$5,$8}' ``` 
* ``` cat netstat.log.5 |  awk '$4 ~ /:80$/ {c++;print $5 | "sed 's/::ffff://' | sed 's/:.*$//'| sort | uniq -c | sort -n | tail -n 10"} END {print c}' ```
* ``` netstat -plantu | grep -c :1433 ```
* ``` ifconfig eth0 ```
* **Print last 20 lines from the error_log file**  `tail -20   /var/log/httpd/error_log`
* **Get max number of client on apache configuration** ``` grep -i maxclients /etc/httpd/conf/httpd.conf ```
* ``` cat /etc/my.cnf  | grep cache -i | grep -v ^# ```
* ``` grep "^|" queries-pre-restart.txt | awk '{ print $14 }' | sort | uniq -c | sort -nr ```
* `mkdir -p www/public_html` **Will make directory at nested level (it will create both directory)**