What (who) is EXEC 8 - definition

Verified Exec; Verified exec

EXEC 8

OPERATING SYSTEM FOR THE UNISYS CLEARPATH DORADO FAMILY OF MAINFRAME SYSTEMS

UNIVAC EXEC 8; EXEC 8; User:Gtgray1948/Unisys OS 2200 operating system; Unisys OS 2200; Unisys OS 2200 operating system; EXEC*8

<operating system> Unisys's operating system from about 1980 to 2000, by which time it was a dying breed with Unisys moving to Windows NT and Unix. [Was 8 the successor to EXEC 2?] (2000-08-06)

Exec (system call)

EXECUTE A FILE (A LIBRARY FUNCTION AND/OR A SYSTEM CALL)

Exec(); Execve(); Execv; Execve; Execle; Execl; Exec (Unix); Exec (operating system); Exec (computing); Execvp

In computing, exec is a functionality of an operating system that runs an executable file in the context of an already existing process, replacing the previous executable. This act is also referred to as an overlay.

https://en.wikipedia.org/wiki/Exec_(system_call)

UNIVAC EXEC I

OPERATING SYSTEM FOR UNIVAC 1107 COMPUTER, 1962

EXEC I

EXEC I is a discontinued UNIVAC's original operating system developed for the UNIVAC 1107 in 1962. EXEC I is a batch processing operating system that supports multiprogramming.

https://en.wikipedia.org/wiki/UNIVAC_EXEC_I

Wikipedia

Veriexec

Veriexec is a file-signing scheme for the NetBSD operating system.

It introduces a special device node (/dev/veriexec) through which a signature list can be loaded into the kernel. The list contains file paths, together with hashes and an expected file type ("DIRECT" for executables, "INDIRECT" for scripts and "FILE" for shared libraries and regular files). The kernel then verifies the contents of the signed files against their hashes just before they are opened in an exec() or open() system call.

When Veriexec is enabled at level 0, the kernel will simply warn about signature mismatches. At level 1, it will prevent access to mismatched files. At level 2, it prevents signed files from being overwritten or deleted. At the highest, level 3, the kernel will not allow unsigned files to be accessed at all.

https://en.wikipedia.org/wiki/Veriexec