What is a PID?
A proportional-integral-derivative controller (PID controller) is a generic control loop feedback mechanism widely used in industrial control systems. A PID controller attempts to correct the error between a measured process variable and a desired setpoint by calculating and then outputting a corrective action that can adjust the process accordingly.
PID damage is not curable; the bacteria that caused PID can be treated. Antibiotics will be prescribed for the bacteria that caused the PID, but the damage can't be reversed. The damages of PID can't be reversed. Antibiotics will be prescribed for the bacteria that caused the PID, but damage can't be reversed.
No, every process gets its own PID. Otherwise, all PIDs would be the same, since every process is a child of some other process, all the way back to the init process (PID 1). The fork() system call will return the PID of the child to the parent, and will return 0 to the child. The child can find out its own PID with getpid(), and its parent PID with getppid().
linux system time is change strangelyevery time i changed my system date as following: #date -s 03/19/2009 #clock -w then , about a few minute later,the date is changed to update always. i don't know what the problem, could you give me help. Note:the ntpd service is stopped. #service --status-all|grep 'is running' atd (pid 4642) is running... crond (pid 4417) is running... cupsd (pid 15164) is running... cups-config-daemon (pid 4675) is running... Device not specified…