HP-UX Reference (11i v1 00/12) - 5 Miscellaneous Topics, 7 Device (Special) Files, 9 General Information, Index (vol 9)
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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man9/!!!intro.9
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u
glossary(9) glossary(9)
UTC See Epoch.
utility An executable file, which might contain executable object code (that is, a program), or a
list of commands to execute in a given order (that is, a shell script). You can write your
own utilities, either as executable programs or shell scripts (which are written in the shell
programming language).
volume number
Part of an address used for devices. A number whose meaning is software- and device-
dependent, but which is often used to specify a particular volume on a multivolume disk
drive. See the System Administrator manuals supplied with your system for details.
whitespace One or more characters which, when displayed, cause a movement of the cursor or print
head, but do not result in the display of any visible graphic. The whitespace characters in
the ASCII code set are space, tab, newline, form feed, carriage return, and vertical tab. A
particular command or routine might interpret some, but not necessarily all, whitespace
characters as delimiting fields, words, or command options.
working directory
Each process has associated with it the concept of a current working directory. For a shell,
this appears as the directory in which you currently ‘‘reside’’. This is the directory in which
relative path name (i.e., a path name that does not begin with
/) searches begin. It is
sometimes referred to as the current directory, or the current working directory.
zombie process
The name given to a process which terminates for any reason, but whose parent process
has not yet waited for it to terminate (via wait(2)). The process which terminated contin-
ues to occupy a slot in the process table until its parent process waits for it. Because it has
terminated, however, there is no other space allocated to it either in user or kernel space.
It is therefore a relatively harmless occurrence which will rectify itself the next time its
parent process waits. The ps(1) command lists zombie processes as
defunct.
Section 9−−24 − 23 − HP-UX Release 11i: December 2000
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