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gentleintroduction

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Gentle Introduction

Frequently Asked Questions aka FAQ

How do I see all processes?

  • ps ax
  • top

Note that the output display of top is constrained by the size of the terminal/console, so if there are more processes than lines, top will not show all processes.

Why do some processes have a negative PID?

The processes have a negative PID because they are part of the kernel.

What do the names of the operating system processes mean and what is their function?

Kernel "processes"

name full name purpose
asyncm
idle
clock
system
kernel

System processes: servers

name full name purpose
pm process mananger
vfs virtual file system
rs reincarnation server monitor other system processes and re-start them as needed, see man service
ds data store server
vm virtual memory server
pfs pipe file system
sched scheduler
init grandparent of all processes, see man init
procfs
mfs Minix file system
is information server for debug dumps
inet Internet Protocol server
ipc inter-process communication

System processes: device drivers

name full name purpose
log log driver buffers log output
memory memory driver
tty terminal driver (historical origin of name is “teletype”) console and keyboard driver
pci
floppy
at_wini AT disk driver
random
printer

Why can't I refresh the Ethernet driver? When I type "service refresh e1000" I see "no such process" in response.

The Ethernet driver can have multiple instances and its label is the name of the driver followed by an underscore followed by a number which represents the instance number (starting at 0).

For instance, when I enter ps ax, I see “/usr/sbin/e1000 instance=0”, so the label is “e1000_0”. I can also see the labels of the services by hitting Shift + F6 at the Minix console. See CommandLineInterface for more of these useful function keys. See man service for details on the service command.

So, the proper answer is service refresh e1000_0.

gentleintroduction.1415713928.txt.gz · Last modified: 2014/11/11 14:52 by 127.0.0.1