HP-UX Reference (11i v2 07/12) - 7 Device (Special) Files, 9 General Information, Index (vol 10)

s
glossary(9) glossary(9)
source of all data read from stdin, but it can be redirected from another source.
standard output
The destination of output data from a program. The standard output file is often called stdout, and is
automatically opened for writing on file descriptor 1 for every command invoked. By default, the user’s ter-
minal is the destination of all data written to stdout, but it can be redirected elsewhere.
stderr
See standard error.
stdin
See standard input.
stdout
See standard output.
stream
A term most often used in conjunction with the standard I/O library routines documented in Section 3 of
this manual. A stream is simply a file pointer (declared as
FILE *stream) returned by the fopen(3S)
library routines. It may or may not have buffering associated with it (by default, buffering is assigned, but
this can be modified with setbuf(3S)).
sticky bit
A single bit in the mode of every file in the file system. If set on a regular file, the contents of the file stay
permanently in memory instead of being swapped back out to disk when the file has finished executing.
Only superuser can set the sticky bit on a regular file. The sticky bit is read each time the file is exe-
cuted (via exec(2)).
If set on a directory, the files in that directory can be removed or renamed only by the owner of the file, the
owner of the directory containing the file, or superuser. See also chmod(2), rename(2), rmdir(2), and
unlink(2).
subdirectory
A directory that is one or more levels lower in the file system hierarchy than a given directory. Sometimes
called a subordinate directory.
subordinate directory
See subdirectory.
Subset 1980
See CS/80.
superblock
A block on each file system’s mass storage medium which describes the file system. The contents of the
superblock vary between implementations. Refer to the system administrator manuals supplied with your
system for details.
superuser
The HP-UX system administrator. This user has access to all files, and can perform privileged operations.
superuser has a real user ID and effective user ID of 0, and, by convention, the user name of root.
superior directory
See parent directory.
supplementary group ID
A process has up to
NGROUPS_MAX supplementary group IDs used in determining file access permissions,
in addition to the effective group ID. The supplementary group IDs of a process are set to the supplemen-
tary group IDs of the parent process when the process is created.
symbolic link
A type of file that indirectly refers to a path name. See symlink(4).
262 Hewlett-Packard Company − 23 − HP-UX 11i Version 2: December 2007 Update