Tips & Tricks (administration)

How to switch off speaker «beeps» in X and console.

To find out overall CPU usage for all time command is running (etime is command start time, time is overall CPU used time, %cpu is overall CPU used percents): ps -eo pid,etime:12,time:10,%cpu,%mem,user,args | cut -c 1-80 | sort -n -k 4 | tail This can be helpful when trying to detect overall system load by long-running services.

Several small and useful quick references downloaded from elsewhere: