popen fgets

The standard I/O function library provides a popen function that initiates another process to execute a shell command line. Here we call the process called Popen the parent process, and the process initiated by Popen is called a subprocess. The

using the system under Linux requires caution , so what is the alternative?The standard I/O function library provides the Popen function, which initiates another process to execute a shell command line.Here we call the process calling Popen the

using the system under Linux requires caution, then what is the alternative to it? The standard I/O function library provides the Popen function, which initiates another process to execute a shell command line.Here we call the process calling Popen

The standard I/O function library provides the Popen function, which initiates another process to execute a shell command line.Here we call the process calling Popen the parent process, and the process initiated by Popen is called a child

0, FILE *popen (const char *command, const char *type);The Popen function is equivalent to doing several things:1. Create a nameless pipe file2. Fork ()3, in the sub-process, EXEC command4, in the sub-process,if type = = "R", it is equivalent to:int

1. Fork + Exec Fork is used to create a child process. When a program calls the fork function, the system prepares the preceding three segments for a new process. First, the system allows the new process and the old process to use the same code

Popen () function introduction function definition FILE * popen (constchar * command, constchar * type); intpclose (FILE * stream); function description popen () function creates a pipeline, call fork to generate a sub-process ,... Introduction to

1. Fork + execFork is used to create a child process. When a program calls the fork function, the system prepares the previous three segments for a new process, first, the system allows the new process to use the same code snippet as the old process,

Linux C-popen () function # Include File * popen (const char * command, const char * type ); Int pclose (File * stream ); Description The popen () function uses the pipeline creation method and shell. because the pipeline is defined as a single

Simply say the Popen () functionfunction definition#include * Popen (constcharconstchar *type); int pclose (FILE *stream);function Description　　The Popen () function creates a child process by creating a pipe, calling fork (), and executes a shell