pararun: run jobs in parallel (fork)

by darkgeem
.cast - original recording .txt - plain text version .gif - animated GIF
GNU/Linux ◆ xterm-256color ◆ fish 148 views

here’s the source code for pararun:

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and the non-base64 version:

#include <unistd.h>
#include <stdio.h>
#include <sys/wait.h>

#define PARARUN_NAME argv[0]
#define EXECUTABLE argv[1]

int main(int argc, char** argv) {
	if (argc < 2) {
		printf("Usage: %s ./executable file1 file2 file3\n", PARARUN_NAME);
		return 1;
	}
	if (argc < 3) {
		printf("Usage: %s %s file1 file2 file3\n", PARARUN_NAME, EXECUTABLE);
		return 1;
	}
	for (int i = 2; i < argc; i += 1) {
		if (fork() == 0) {
			execlp(EXECUTABLE, EXECUTABLE, argv[i], NULL);
			break;
		}
	}

	for (int i = 2; i < argc; i += 1) {
		wait(NULL);
	}

	return 0;
}

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