| O
- -o option
- mount command
, , ,  - share command
, , 
- -O option of mount command
, 
- octal numbers escape character
, , 
- OK message
, 
- open errors
- NFS and
, 
- opening remote system connections
, , 
- operating systems
- map variables
,  - supporting incompatible versions
, 
- options (PPP)
- asyncmap
,  - auth
,  - call
, ,  - connect
, , , ,  - crtscts
,  - defaultroute
, ,  - guidelines for use
,  - init
, ,  - local
,  - login
, ,  - name
, ,  - noauth
, , , ,  - noccp
, ,  - nodefaultroute
,  - noipdefault
, ,  - noservice
,  - option privileges
, ,  - parsing, by the pppd daemon
,  - passive
,  - persist
,  - plugin
,  - remotename
, ,  - require-chap
,  - require-pap
,  - sppptun
,  - sync
,  - updetach
,  - user
, ,  - xonxoff
, 
- options file, in PPP
- See /etc/ppp/options
- options for PPP
- debug
, 
- options in sendmail command
- ClientPortOptions option
,  - command-line options
,  - configuration file options
- deprecated and unsupported
,  - supported
, 
- DaemonPortOptions option
,  - PidFile option
,  - PrivacyOptions option
,  - ProcessTitlePrefix option
,  - Timeout option
, 
- options.ttyname file (PPP)
- See /etc/ppp/options.ttyname
- OSNAME map variable
, 
- OSREL map variable
, 
- ostype directory
, 
- OSVERS map variable
, 
- OTHER option of Permissions file
, 
- overlaying already mounted file system
, 
- owner- prefix, mail alias with
, 
P
- p escape character
- Dialers file
,  - Systems file chat script
, 
- packet size
- configuring for SLP
, 
- PAM (pluggable authentication module)
- identity management
, 
- PAP credentials database
- creating
- for a dial-in server
, ,  - for trusted callers
, 
- parity
- Dialers file
,  - Systems file
, 
- passive mode
, 
- passive option (PPP)
, 
- passwd file
- enabling UUCP logins
, 
- Password Authentication Protocol (PAP)
- authentication process
,  - configuring
- on a dial-in server
,  - trusted callers
, , , 
- creating a PAP credentials database
,  - definition
,  - /etc/ppp/pap-secrets file
,  - example configuration
,  - planning
,  - suggestions for passwords
,  - task maps
, ,  - using the login option
, 
- passwords
- authentication for remote logins
- ftp command
, ,  - rlogin command
, , , 
- autofs and superuser passwords
,  - DH password protection
,  - Secure RPC password creation
,  - UUCP privileged
, , 
- path names
- rcp command
- absolute or abbreviated
, ,  - syntax options
, , 
- tilde (~) in
, , 
- pathconf: no info message
, 
- pathconf: server not responding message
, 
- PC-DOS files
- accessing with autofs
, 
- pcfs option
- autofs maps
, 
- peer
- access server
, ,  - authenticatee
,  - authenticator
,  - definition
,  - dial-in server
,  - dial-out machine
,  - leased-line peer
,  - PPPoE client
, , 
- peers file for PPP
- See /etc/ppp/peers/peer-name
- penril entry in Dialers file
, , 
- percent sign (%) in mailbox names
, 
- Permission denied message
, 
- permissions
- copying requirements
,  - NFS version 3 improvement
, 
- Permissions file
, ,  - CALLBACK option
, ,  - changing node name
,  - COMMANDS option
, , ,  - considerations
, ,  - description
, ,  - dialback permissions
, ,  - file transfer permissions
, ,  - format
,  - forwarding operation
,  - LOGNAME
- combining with MACHINE
,  - description
,  - login IDs for remote computers
, 
- MACHINE
- combining with LOGNAME
,  - default permissions or restrictions
,  - description
,  - OTHER option
, 
- MYNAME option
,  - NOREAD option
,  - NOWRITE option
,  - OTHER option
,  - READ option
, ,  - remote execution permissions
, ,  - REQUEST option
,  - security set up
,  - SENDFILES option
,  - structuring entries
,  - uucheck command and
,  - uuxqt daemon and
,  - VALIDATE option
, ,  - WRITE option
, 
- Permit-type field of Grades file
, 
- persist option (PPP)
, 
- Phone field of Systems file
, 
- PidFile option
- sendmail command
, , 
- ping command
, , , , 
- PKCGET READ message
, 
- PKXSTART message
, 
- pluggable authentication module
- See PAM
- plugin option (PPP)
, 
- plus sign (+)
- /etc/hosts.equiv file syntax
, ,  - in autofs map names
, , 
- Point-to-Point Protocol
- See PPP
- Poll file
- description
, ,  - format
, 
- polling remote computers (UUCP)
, , 
- Port Selector variable in Devices file
, 
- portmapper
- mounting and
, 
- ports
- Devices file entry
,  - UUCP
, 
- postmaster alias, creating
, 
- postmaster mailbox
- creating
,  - description
,  - testing
, 
- pound sign (#)
- comments in direct maps
,  - comments in indirect maps
,  - comments in master map (auto_master)
, 
- PPP
- authentication
, ,  - chat script examples
,  - common problems
,  - compatibility
,  - converting from asynchronous PPP
,  - dial-up link
,  - difference with asppp
,  - DSL support
,  - file privileges
, ,  - ISDN support
,  - leased-line link
,  - modem settings, basic
,  - options for configuration files
- See options (PPP)
- overview
,  - parts of a link
,  - pppd
- See also pppd command
- PPPoE
,  - problem solving
- See also troubleshooting PPP
- related RFCs
,  - resources, external
,  - summary of configuration files
,  - task map for PPP planning
, 
- pppd command
- definition
,  - initiating a call
,  - obtaining diagnostics
, , ,  - parsing options
, 
- pppd command
- testing a DSL line
, 
- pppd command
- turning on debugging
, 
- pppdebug log file
, 
- PPPoE
- configuring an access server
, , , ,  - DSLAM
,  - fixing common problems
, , ,  - list of commands and files
,  - obtaining snoop traces
,  - overview
,  - planning for the tunnel
, , , ,  - providing services from an access server
, , ,  - task maps for configuring
,  - tunnel participants
, 
- PPPoE client
- configuring
, , , , , ,  - definition
,  - equipment
,  - /etc/ppp/peers/peer-name file usage (PPPoE)
,  - planning
, ,  - task map for configuring
, 
- pppoe.so shared object
, 
- pppoe.so shared object
, 
- pppoec utility
- definition
,  - obtaining diagnostics
, 
- pppoed daemon
- definition
,  - starting
, 
- .ppprc file
- creating
,  - definition
,  - for a dial-in server
,  - for a dial-out machine
,  - privileges
, 
- praliases command
, 
- preserve_local_plus_detail FEATURE() declaration
, 
- preserve_luser_host FEATURE() declaration
, 
- printing
- list of remotely mounted directories
,  - list of shared or exported files
, 
- PrivacyOptions option
- sendmail command
, , 
- privilege levels
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- processor type map variable
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- ProcessTitlePrefix option
- sendmail command
, , 
- programs
- hung
, 
- project
- active state
,  - definition
,  - idle state
,  - with zero shares
, 
- project 0
, 
- project.cpu-shares
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- project entry format
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- project system
- See project 0
- projects
- consolidating files
, 
- protocol definitions in Devices file
, , 
- proxy advertisement (SLP)
, , 
- proxy registration (SLP)
, , ,  - multihomed hosts
, 
- PRUNE_TIMEOUT parameter
- /etc/default/nfslogd file
, 
- pstack command
, 
- public directory maintenance (UUCP)
, 
- public file handle
- autofs and
,  - mounting and
,  - NFS mounting with
,  - WebNFS and
, 
- public-key cryptography
- common key
,  - conversation key
,  - database of public keys
, ,  - DH authentication
, ,  - secret key
- database
,  - deleting from remote server
, 
- time synchronization
, 
- public option
- in dfstab file
,  - mount command
, ,  - share error message
,  - WebNFS and
, 
- publickey map
,  - enabling secure NFS
, 
- put command (FTP)
- copying to remote systems
,  - example
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- putacct
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