HP-UX Reference (11i v3 07/02) - 7 Device (Special) Files, 9 General Information, Index (vol 10)

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glossary(9) glossary(9)
00200 Write by user
00060 Read, Write by group
00006 Read, Write by others
Read and Write permissions for a shmop(2) or shmctl(2) operation on a shared memory identifier
(shmid) are granted to a process if one or more of the following are true:
• The process’s effective user ID is superuser.
• The process’s effective user ID matches
shm_perm.[c]uid in the data structure associated with the
shmid and the appropriate bit of the "user" portion (0600) of
shm_perm.mode
is set.
• The process’s effective user ID does not match
shm_perm.[c]uid
and either the process’s effective
group ID matches
shm_perm.[c]gid
or one of shm_perm. [c]gid is in the process’s group access
list and the appropriate bit of the "group" portion (060) of
shm_perm.mode
is set.
• The process’s effective user ID does not match
shm_perm.[c]uid and the process’s effective group
ID does not match
shm_perm.[c
]gid and neither of shm_perm.[c]gid is in the process’s group
access list and the appropriate bit of the "other" portion (06) of
shm_perm.mode
is set.
Otherwise, the corresponding permissions are denied.
shell
A user interface to the HP-UX operating system. A shell often functions as both a command interpreter
and an interpretive programming language. A shell is automatically invoked for every user who logs in.
See sh(1) and its related manual entries plus the tutorials supplied with your system for details.
shell program
See shell script.
shell script
A sequence of shell commands and shell programming language constructs stored in a file and invoked as a
user command (program). No compilation is needed prior to execution because the shell recognizes the
commands and constructs that make up the shell programming language. A shell script is often called a
shell program or a command file. See the Shells User Guide.
shmid
See shared memory identifier.
signal
A software interrupt sent to a process, informing it of special situations or events. Also, the event itself.
See signal(2).
single-user state
A condition of the HP-UX operating system in which the system console provides the only communication
mechanism between the system and its user. By convention, single-user state is usually specified by
init(1M) as run-level
S or s. Do not confuse single-user state, in which the software is limiting a mul-
tiuser system to a single-user communication, with a single-user system, which can never communicate
with more than one fixed terminal. See also multiuser state.
slash
The literal character /.Apath name consisting of a single slash resolves to the root directory of the
process. See also path name resolution.
solidus
See slash.
source code
The fundamental high-level information (program) written in the syntax of a specified computer language.
Object (machine-language) code is derived from source code. When dealing with an HP-UX shell command
language, source code is input to the command language interpreter. The term shell script is
synonymous with this meaning. When dealing with the C Language, source code is input to the cc(1)
command. Source code can also refer to a collection of sources meeting any of the above conditions.
HP-UX 11i Version 3: February 2007 − 22 − Hewlett-Packard Company 267