The at command is used to schedule commands to be executed once at a particular time in the future. More precisely, it reads a series of commands from standard input and collects them into one "at-job" which is carried out at a later date. It is found in the Unix family of operating systems and other flavors as well. In computing, a command is a directive to a computer program acting as an interpreter of some kind, in order to perform a specific task. ... The standard streams are a set of input and output channels featured in Unix and Unix-like operating systems, and provided by the standard I/O library (stdio. ...
at can be made to mail a user when done carrying out a scheduled job of theirs, can use more than one job queue, and can read a list of jobs to carry out from a file instead of standard input.
It uses a daemon, atd, which waits in the background periodically checking the list of jobs to do and executing those at their allotted time on behalf of at. It can be made to only run scheduled jobs if the system's load average is below a certain value. In Unix and other computer multitasking operating systems, a daemon is a computer program that runs in the background, rather than under the direct control of a user; they are usually instantiated as processes. ... Load, in computing, is a measure of the amount of processing a computer system is currently performing, usually in the form of a scalar and as some variation on a percentage. ...
Surname redirect crontab ... launchd is a unified, open source service management framework for starting, stopping and managing daemons and other programs. ... Apple Computer, Inc. ...
The Pannolini Unix diapers are not a mere will o' the wisp; one correspondent supplied an image of the box, and the current owner of this instance of the name responded to mail to their webmaster.
UNIXmake moving not pain but almost pleasure, and are easily moved from room to room, upstairs or down....
Unix Electric Company of Korea, in business since 1979, has a diverse line of appliances for the body, the kitchen, and the home.
During the late 1970s and early 1980s, Unix's influence in academic circles led to massive adoption (particularly of the BSD variant, originating from the University of California, Berkeley) of Unix by commercial startups, the most notable of which is Sun Microsystems.
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