execɪgˈzɛk
exec (n)
- plural
- execs
English Definitions:
White House, EXEC (noun)
the chief executive department of the United States government
exec (Noun)
executive, executive officer
exec
The exec collection of functions of Unix-like operating systems cause the running process to be completely replaced by the program passed as an argument to the function. As a new process is not created, the process identifier does not change, but the data, heap and stack of the original process are replaced by those of the new process. In the execl, execlp, execv, and execvp calls, the new process image inherits the current environment variables. Files open when an exec call is made remain open in the new process. This aspect is used to specify the standard streams of the new process. In MS-DOS environments, a program executed with one of the exec functions is always loaded into memory as if the "maximum allocation" in the program's executable file header is set to default value 0xFFFF. The EXEHDR utility can be used to change the maximum allocation field of a program. However, if this is done and the program is invoked with one of the exec functions, the program might behave differently from a program invoked directly from the operating-system command line or with one of the spawn functions. Many Unix shells also offer an exec built-in command that replaces the shell process with the specified program. Wrapper scripts often use this command to run a program after setting environment variables or other configuration. By using exec, the resources used by the shell program do not need to stay in use after the program is started.
exec
CMS EXEC, or EXEC, is an interpreted, command procedure control, computer scripting language used by the CMS EXEC Processor supplied with the IBM Virtual Machine/Conversational Monitor System (VM/CMS) operating system. EXEC was written in 1966 by Stuart Madnick at MIT on the model of CTSS RUNCOM. He originally called this processor COMMAND, and it was later renamed EXEC.CMS EXEC has been superseded by EXEC 2 and REXX. All three — CMS EXEC, EXEC 2 and REXX — continue to be supported by the IBM CMS product.
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"exec." Kamus.net. STANDS4 LLC, 2024. Web. 29 Mar. 2024. <https://www.kamus.net/english/exec>.
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