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Keywords - S


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scanning for consistent data (chkfsys)
· Using chkfsys ·

scheduling processes for execution
· What happens when the system boots ·

security
· Security ·
access control utilities
· Access control utilities ·
default password files
· Default password files ·
file permissions
· File permissions ·
group IDs
· More about user and group IDs ·
limiting user access
· setuid and setgid ·
login utility
· The login utility ·
newgrp utility
· Group ID membership · The newgrp utility ·
passwd utility
· The passwd utility ·
password database
· The password database ·
protecting encrypted passwords
· /etc/.pwlock ·
restricting access to files
· File permissions ·
su utility
· The su utility ·
user IDs
· More about user and group IDs ·
utilities with superuser permissions
· setuid and setgid ·

serial bus
hardware interrupt signals
· Hardware interrupt ·
sharing interrupts
· Multiport serial adapters ·

serial device drivers
Dev.ser
· Starting device drivers ·
starting
· Starting device drivers · Starting device drivers ·
testing operation
· Testing serial drivers ·

serial devices
· Serial devices ·
configuring ports
· Configuring serial ports ·
connecting
· Connecting serial devices ·
modems
· High-speed ECC modems ·
printers
· Serial printers ·
terminals
· Terminals ·
exclusive access
· Exclusive access to serial devices ·
hardware adapters
· Hardware adapters ·
I/O hardware address
· I/O addresses ·
multiport adapters
· Multiport serial adapters ·
printer as target
· Multiple queues feeding three targets ·
RS-232 serial protocol
· The RS-232 serial protocol ·
single-port adapters
· Hardware interrupt ·
troubleshooting
· Troubleshooting serial device problems ·
typical installation
· Typical hardware installation ·
UART hardware interrupts
· Hardware interrupt ·

serial ports
configuring
· Configuring serial ports · Serial devices ·
data bits
· Data bits ·
I/O address and hardware interrupt
· Hardware interrupt ·
parity bits
· Parity ·
sharing interrupts
· Multiport serial adapters ·
specifying baud rate
· Baud rate · Starting device drivers ·
stop bits
· Stop bits ·

servers
boot server
· Boot servers and booting nodes ·
cron server
· Starting a cron server ·
global name server
· Loading node mappings ·
running chkfsys on
· When to run chkfsys ·
spooling server
· Starting the spooler ·

services
base-level
· Build file format ·
customizing
· sysinit.node ·
in sysinit file
· What happens when the system boots ·
selecting modules
· A typical directory structure ·

See also images; system initialization file


session, starting
· Starting a user session ·

setgid, changing
· Changing permissions ·

setuid, changing
· Changing permissions ·

sh shell program
· Base-level services ·

shadow file
· The password database ·

shared library
16-bit
· Mandatory processes · Selecting executables for an image ·
including in build file
· Build file format ·

shell
/bin/sh
· What happens when the system boots ·
echo command
· Setting environment variables ·
environment variables
· Setting environment variables ·
executing profile file
· Shell initialization ·
initialization
· What happens when the system boots ·
scripts
· What happens when the system boots ·
executing within sysinit.node file
· Base-level services ·
selecting
· Home directory, initial command, and initial password ·
set command
· Setting environment variables ·
started by login utility
· Setting environment variables ·

See also commands


sin utility
· If from floppies... ·

sinit utility
· What happens when the system boots ·
shell startup
· What happens when the system boots ·
starting in build file
· Build file format ·
using to set terminal type
· Setting the terminal type ·

Slib16
· Mandatory processes ·

Slib32
· Mandatory processes ·
starting in build file
· Build file format ·

software
installing
· Floppy diskette distribution · If from floppies... · Installing QNX onto a hard disk · What happens when the system boots ·

spatch utility
· spatch ·
examining blocks within a file
· Recovering from a bad block in the middle of a file ·

spooler
architecture
· Spooler architecture ·
default
· Accessing spoolers and queues ·
defined
· Spoolers ·
files
· A typical directory structure ·
locating
· Accessing spoolers and queues · Naming neither a spooler nor a queue ·
multiple
· Registering names -- sp ·
names
on lp command line
· Naming only the spooler ·
registering
· Registering names -- sp · Syntax definitions ·
starting
· Starting the spooler ·

spooling
configuring
· Examples ·
global keywords
· Global keywords ·
jobs
querying
· Querying spool jobs ·
selecting on queue priority
· Multiple queues feeding a single target ·
submitting
· Submitting spool jobs ·
lp utility
· Submitting spool jobs ·
lpc utility
· Controlling the spool queues ·
LPDEST environment variable
· Accessing spoolers and queues · LPDEST ·
lpq utility
· Querying spool jobs ·
lprm utility
· Canceling spool jobs ·
LPSRVR environment variable
· Accessing spoolers and queues · LPSRVR ·
lpsrvr utility
· Starting the spooler ·
lpsrvr.node file
· Starting the spooler ·
named queues in file namespace
· Spoolers ·
output device
· Syntax definitions ·
PRINTER environment variable
· LPDEST ·
queues and targets
· Spooler architecture ·
recording accounting information
· Accounting information · Syntax definitions ·
reinitializing printer between jobs
· Spooler architecture ·
reporting error messages
· Output errors ·
server, starting
· Spoolers · Starting the spooler ·
setup file (lpsrvr)
· Starting the spooler · The spool setup file ·
example
· Example setup files · Queues and targets ·
temporary directory
· Specifying a temporary directory for spool files  --  cd · Syntax definitions ·
utilities
· Spoolers ·
variables
· Filters · Variables ·
adding custom keys
· Variables ·
wait before despooling
· Syntax definitions ·

See also queues


st_mode field, file access
· File permissions ·

standard input and output
defaults
· Default behavior ·
writing to standard output
· Testing parallel drivers ·

standard time zone
defining
· Time zones and the realtime clock ·

See also time zones


startup
controlling order of processes
· Setting priorities ·

stop bits (modem)
· Stop bits ·

stty command
· Starting device drivers ·

su utility
· Access control utilities · The su utility ·

SUB character (DOS)
· DOS text files ·

superuser
accessing accounting file
· Enabling accounting ·
adding new accounts
· The passwd utility ·
changing file mode bits
· Changing permissions ·
Dosfsys file ownership
· File ownership ·
editing password file
· More about user and group IDs ·
permissions on files
· File permissions ·

symbolic links
partitioning pathname space
· Linked independent ·

sysinit file
· sysinit · What happens when the system boots ·

See also system initialization file


sysinit.node file
· altsysinit · Step 4 -- Modify sysinit.node · What happens when the system boots ·

See also system initialization file


syslog file
· /tmp/syslog · /usr/adm/syslog ·

system
accounting information
· Accounting file ·
embedded systems
· Embedded PCs ·
files in /boot/sys directory
· Mandatory processes ·
including shared libraries in build file
· Build file format ·
initialization in build file
· Build file format · Setting environment variables ·
limiting user access to
· setuid and setgid ·
QNX software version (sin)
· If from floppies... ·
recovering data after crash
· When to run chkfsys ·
selecting processes by path
· A typical directory structure ·
troubleshooting boot failure
· What to do if your system will no longer boot ·

System Architecture, reading prior to installing QNX
· Installing QNX onto a hard disk ·

system initialization file
· What happens when the system boots ·
altsysinit
· altsysinit ·
base-level services
· Base-level services ·
contents
· Base-level services ·
copying to altsysinit before changing
· altsysinit ·
customizing for network node
· Step 4 -- Modify sysinit.node ·
establishing time zone
· Establishing the time zone ·
executing
· Base-level services ·
shell commands in
· Base-level services ·
first command in file
· Establishing the time zone ·
floating-point emulator
· Starting the floating-point emulator ·
getting time from realtime clock
· Establishing the time zone ·
hard disk booting
· Establishing the time zone ·
international keyboard support
· International keyboard support ·
last command in file
· Starting a terminal daemon ·
loading node mappings
· Loading node mappings ·
making alternate copy
· Step 6 -- Modify the sysinit.node file ·
modifying for boot server
· Step 6 -- Modify the sysinit.node file ·
mounting
local filesystem
· Primary/secondary ·
remote filesystem
· Primary/secondary ·
nameloc utility
· Starting a name server ·
optional services
· Optional services ·
placing commands in separate file
· Base-level services ·
setting environment variables
· Setting environment variables ·
setting up spoolers and queues
· Initialization files ·
starting
chkfsys
· When to run chkfsys ·
console driver
· Starting device drivers ·
cron server
· Starting a cron server ·
Device Manager
· Starting device drivers ·
DOS filesystem driver
· Starting a DOS filesystem ·
floppy driver
· Starting a floppy driver ·
Fsys
· Primary/secondary ·
login on all consoles
· Starting a terminal daemon ·
mouse driver
· Starting a mouse driver (for console-based apps) ·
network services
· Step 3 -- Start the Network Manager & network driver(s) ·
parallel driver
· Starting device drivers ·
serial driver
· Starting device drivers ·
sysinit
· sysinit ·
sysinit.node
· altsysinit · sysinit.node ·

system shared library, selecting processes from
· Mandatory processes ·

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