answersLogoWhite

0


Want this question answered?

Be notified when an answer is posted

Add your answer:

Earn +20 pts
Q: What is Exec and exit System call?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Types of system call in process management?

fork, exec, wait, exit


What is exec system call of UNIX operating system?

The exec family of UNIX system calls will overlay the current process with another process. It can be used to "chain" a series of programs to run together. When used with the "fork" system call it allows multi-tasking to occur.


How do you call an exe file in c source code?

system, exec*, spawn*, CreateProcess, ShellExecute...


How do you execute a program in c?

Call functions like exec*, spawn*, system, ShellExecute, CreateProcess... most of them is platform-dependent.


What system calls have to be executed by a command interpreter or shell in order to start a new process?

In Unix systems, a fork system call followed by an exec systemcall need to be performed to start a new process. The fork call clones thecurrently executing process, while the exec call overlays a new processbased on a different executable over the calling process.


How do you sneak out of the house WITH an alarm system in every exit possible?

Call me


Function gets returns?

Yes, it does return. There are only few functions that do not return, like exit, exec, longjmp.


What has the author Arne Asphjell written?

Arne Asphjell has written: 'EXEC 8 - a inner look' -- subject(s): EXEC 8 (Electronic computer system)


When does a call to exec return in UNIX?

A call to the exec() family of functions in UNIX does not normally return to the calling process. This is because the call replaces the invoking process'es image, thus there is nothing to return to. If an error does occur, exec() returns -1, and sets an error value that can be interrogated, but the answer to the question is, usually, never. The normal paradigm for launching a process and getting control back, such as by the shell, is to call fork(), which splits the invoking process into two identical processes, one continuing to monitor the other. The other process then calls exec(), replacing itself. When it exits, the first process can detect that and retrieve its return value.


When was Backup Exec created?

Backup Exec was created in 198#.


What is execlp?

execlp() is a system call on UNIX systems (within the "exec" family of system calls declared in unistd.h) that loads an executable and begins executing it within the current process. execlp() is unique from other "exec" calls in that PATH environment variable is searched (so you need not provide the full path of the executable) and the command line arguments are passed in using variable size argument list (... in C) as opposed to an array of arguments.


What is a four letter word that begins with z?

zest, zinc, zips