C语言基本命令.docVIP

Bupu: 第一章：绪论？内核版本号格式：x.y.zz-wwwx为主版本号，y为次版本号，zz为次次版本号，www为发行号次版本号改变说明内核有重大变革，其偶数为稳定版本，奇数为尚在开发中的版本第二章：基础？文件种类：-：txt，二进制d：目录l：链接文件（link）b：区块设备文件c：字符设备文件p：管道目录结构：bin：可执行boot：开机引导dev：设备文件etc：系统配置文件lib：库文件mnt：设备挂载点var：系统日志命令：rmdir：删除空目录find path expressiontouch命令还可以修改指定文件的最近一次访问时间tar -czvf usr.tar.gz pathtar zxvf usr.tar.gztar cjvf usr.tar.bz2 pathtar jxvf usr.tar.bz2gcc：预处理：-gI在头文件搜索路径中添加目录，L在库文件搜索路径中gdb：设置断点：b查看断点信息：infoMakefile：make f other_makefile%s line-%d: fmt, _FILE_, _LINE_, #args)#else#define PRINTF(fmt, args.) dowhile(0);#endifint main(void)PRINTF(%sn, hello!);fprintf(stdout, hello hust!n);return 0;#define N 5#define MAX 5int nput = 0;char bufMAX50;char *buffer = abcdefghijklmnopqrstuvwxyz0123456789;char buf_r100;sem_t mutex,full,avail;void *productor(void *arg);void *consumer(void *arg);int i = 0;int main(int argc, char *argv)int cnt = -1;int ret;int nput = 0;pthread_t id_produce10;pthread_t id_consume;ret = sem_init(&mutex, 0, 1);ret = sem_init(&avail, 0, N);ret = sem_init(&full, 0, 0);for(cnt = 0; cnt 6; cnt + )/pthread_create(&id_producecnt, NULL, (void *)productor, &cnt);pthread_create(&id_producecnt, NULL, (void *)productor, (void *)cnt);pthread_create(&id_consume, NULL, (void *)consumer, NULL);for(cnt = 0; cnt = MAX * 3)sem_post(&avail);/sem_post(&full);sem_post(&mutex);return NULL;sscanf(buffer + nput, %s, bufnput % MAX);/printf(write%d %s to the buffer%dn, (*(int*)arg), bufnput % MAX,nput % MAX);printf(write%d %s to the buffer%dn, (int)arg, bufnput % MAX,nput % MAX);nput +;printf(nput = %dn, nput);sem_post(&mutex);sem_post(&full);return NULL;void *consumer(void *arg)int nolock = 0;int ret, nread, i;for(i = 0; i MAX * 3; i+)sem_wait(&full);sem_wait(&mutex);memset(buf_r, 0, sizeof(buf_r);strncpy(buf_r, bufi % MAX, sizeof(bufi % MAX);printf(read