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How to call a executable file on Unix?

How to call a executable file on Unix?# Unix - 噫吁兮，危乎高哉

a*e2003-07-21 07:07

1 楼

I am writing a C++ program on Unix system. I want to call an executable file
in my
program.
It seems that the function system() is designed for calling system command.
Both _spawnl and _exeul only work on NT or Windows.
Which function should I use? Is there such a function in ANSI? If not, how to
solve this problem?

x*g2003-07-21 07:07

2 楼

man exec

【在 a*****e 的大作中提到】

: I am writing a C++ program on Unix system. I want to call an executable file
: in my
: program.
: It seems that the function system() is designed for calling system command.
: Both _spawnl and _exeul only work on NT or Windows.
: Which function should I use? Is there such a function in ANSI? If not, how to
: solve this problem?

a*e2003-07-21 07:07

3 楼

Thanks. I will try.

file
command.
to

【在 x******g 的大作中提到】

: man exec

c*r2003-07-21 07:07

4 楼

"exec" won't be a "call" to a program, because it won't
return to the original process.
You need to do a fork() then exec() and wait -- basically, what system()
does (system() calls vfork() to be efficient)
Check system() again, it should work. You might forget to give
it the full path of the callee program.

【在 a*****e 的大作中提到】

: Thanks. I will try.
:
: file
: command.
: to