SYSTEM
PROGRAMS :
It
is also known as system utilities. It provides a convenient environment for
program development and execution.
·
File Management: Programs create, delete,
copy, rename, print, dump, list & generally manipulate files and
directories.
·
Status information: Some programs ask the
system for date, time, and disk space, number of users or similar status
information. It also support registry, which is used to store and retrieve
configuration information.
·
File modification: Some text editors may be
available to create & modify the content of files stored on tape/disk.
·
Programming language support: Compilers, Assemblers,
Debuggers & Interpreters for common programming languages are provided.
·
Program Loading and
Execution:
The system may provide absolute loaders, re-locatable loaders, linkage editors
& overlay loaders. Debugging systems are also needed.
·
Communications: These programs allow
users to send message to one another’s screen, because the web pages, send
email messages or to transfer files from one machine to another.
·
Background services : All general purpose
system have methods for launching certain programs at the boot time. Some of
these processes terminate after completing the tasks, while others continue to
run until the system is halted. Constantly running system-program processes are
known as services, subsystems, or daemons.
Along with system programs,
most operating systems are supplied with programs that are useful in solving
common problems or performing common operations. Such as application programs include
Web Browsers, word processors and text formatters , spreadsheets, database
system, compilers plotting and statical-analysis packages, and games.
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