Chain Loading in Unix
In Unix (and in Unix-like operating systems), the exec system call is used to perform chain loading. The program image of the current process is replaced with an entirely new image, and the current thread begins execution of that image. The common data area comprises data such as the process' environment variables, which are preserved across the system call.
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Famous quotes containing the words chain and/or loading:
“We are all bound to the throne of the Supreme Being by a flexible chain which restrains without enslaving us. The most wonderful aspect of the universal scheme of things is the action of free beings under divine guidance.”
—Joseph De Maistre (1753–1821)
“Nitrates and phosphates for ammunition. The seeds of war. They’re loading a full cargo of death. And when that ship takes it home, the world will die a little more.”
—Earl Felton, and Richard Fleischer. Captain Nemo (James Mason)