Keywords - U

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UARTs

hardware interrupts generated

· Hardware interrupt ·

I/O address range

· I/O addresses ·

managed by Dev.ser

· I/O addresses ·

sharing interrupts

· Multiport serial adapters ·

umask utility

· How mode bits are assigned ·

assigning mode bits

· How mode bits are assigned ·

permission bit mask

· How mode bits are assigned ·

umount utility

· Partitioning the pathname space ·

undeleting a zapped file

· Recovering a zapped file ·

unmounting devices

· Partitioning the pathname space ·

usage message example

· Floppy diskette distribution ·

user

ID

real

· More about user and group IDs ·

IDs

· More about user and group IDs ·

changing

· Effective user and group IDs ·

effective

· Effective user and group IDs ·

removing user account

· Deleting a user account ·

support under DOS

· File ownership ·

switching to group ID

· Group ID membership ·

user IDs

determining ranges

· The passwd utility ·

ranges

· User ID number ·

reserved range

· User ID number ·

setting ranges in passwd file

· The passwd utility ·

username

· The passwd utility ·

entering at login

· The login utility ·

users

$HOME/.profile file

· Shell initialization ·

accounts

· The passwd utility ·

controlling access

to session

· Starting a user session ·

to system

· setuid and setgid ·

database file

· The login utility ·

granting access by group ID

· Group ID membership ·

password file

· The passwd utility ·

preferences

· Shell initialization ·

reading /etc/passwd file

· /etc/.pwlock ·

removing user account

· Deleting a user account ·

UTC

See time zones

utilities

/etc/install utility

· If from floppies... ·

access control utilities

· Access control utilities ·

buildqnx

· Introduction · Step 3 -- Construct the build file ·

cat

· Default behavior · Testing parallel drivers ·

chgrp

· Changing permissions ·

CHKDSK (DOS)

· Error codes returned by Dosfsys ·

chkfsys

· chkfsys · Using chkfsys ·

chmod

· Changing permissions ·

chown

· Changing permissions · File ownership ·

cp

· DOS devices · Filesystem backups ·

cpio

· Archive backups ·

cron

· Starting a cron server ·

date

· Getting the date and time from the realtime clock ·

dcheck

· dcheck ·

dinit

· Copying files to floppy · dinit · Root directory ·

ditto

· Network diagnostics ·

emu87

· Starting the floating-point emulator ·

fdformat

· Copying files to floppy ·

fdisk

· fdisk · Multiple QNX partitions ·

freeze

· Compression · Naming volumes ·

gunzip

· Compression ·

gzip

· Compressing the log file · Compression ·

infocmp

· The terminfo database ·

kbd

· International keyboard support ·

kedit

· International keyboard support ·

less

· Linked independent ·

license

· Operating system licensing ·

licinfo

· Step 2 -- Install your network licenses · Verifying your licenses ·

ln

· Linked independent ·

lockfd

· Archiving data to floppy ·

logging information about users

· /etc/.pwlock ·

login

· Access control utilities · Logging in · Setting environment variables ·

lp

· Submitting spool jobs ·

lpc

· Controlling the spool queues ·

lpq

· Querying spool jobs ·

lprm

· Canceling spool jobs ·

lpsrvr

· Spoolers ·

ls

· A hard disk and a floppy · Setting up a DOS filesystem · Viewing permissions ·

make

· Constructing a build file ·

melt

· Compression ·

mkdir

· Setting up a DOS filesystem ·

modem

· Modem access ·

mount

· Partitioning the pathname space · Starting a floppy driver ·

mousetrap

· Starting a mouse driver (for console-based apps) ·

nameloc

· Loading node mappings · Step 4 -- Start nameloc ·

netboot

· Introduction · Step 5 -- Start netboot · Step 8 -- Modify the netboot file · The build file for network booting ·

netinfo

· Network diagnostics ·

netmap

· Loading node mappings · Step 7 -- Modify the netmap file ·

nettrap

· Starting two or more network drivers ·

newgrp

· Group ID membership ·

passwd

· Access control utilities · The passwd utility ·

pax

· Archive backups ·

pr

· Using copy-in ·

prefix

· Primary/secondary ·

rm

· Removing and reinstalling drivers ·

rmdir

· Setting up a DOS filesystem ·

rtc

· Getting the date and time from the realtime clock ·

running with superuser permissions

· setuid and setgid ·

sin

· If from floppies... ·

sinit

· Setting the terminal type · What happens when the system boots ·

spatch

· spatch ·

spooler and queue utilities

· Spoolers ·

TCP/IP

· Spoolers ·

su

· Access control utilities · The su utility ·

tape

· Tape ·

tar

· Archive backups ·

termdef

· A word about dial-up access ·

textto

· DOS text files ·

tic

· The terminfo database ·

tinit

· Automating logins · Modem access · Starting a terminal daemon · The login utility ·

touch

· Compressing the log file · Enabling accounting ·

tr

· DOS text files ·

umask

· How mode bits are assigned ·

umount

· Partitioning the pathname space ·

using on DOS filesystem

· Setting up a DOS filesystem ·

vol

· Naming volumes ·

zap

· zap ·

utmp file

· /etc/utmp ·

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