linux c获取进程信息

#include <stdio.h>
#include <unistd.h>

int main() {
    pid_t pid = getpid();
    printf("Current Process ID: %d\n", pid);
    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void read_proc_status(pid_t pid) {
    char path[256];
    FILE *statusf;
    char line[256];

    snprintf(path, sizeof(path), "/proc/%d/status", pid);

    if ((statusf = fopen(path, "r")) != NULL) {
        while (fgets(line, sizeof(line), statusf)) {
            printf("%s", line);
        }
        fclose(statusf);
    } else {
        perror("Failed to open status file");
    }
}

int main(int argc, char *argv[]) {
    if (argc < 2) {
        fprintf(stderr, "Usage: %s <pid>\n", argv[0]);
        return 1;
    }

    pid_t pid = atoi(argv[1]);
    read_proc_status(pid);
    return 0;
}