. If no object files are listed as arguments, nm assumes the file a.out.【GNU nm命令展示nm参数中的所有目标文件中的符号(默认目标文件是a.out)】 For each symbol, nm shows: o The symbol value, in the radix selected by options (see b
open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=1276, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1f48875000 read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 1276 read(3...
UDP套接字使用sendto()/recvfrom()来发送/接收数据报。 ssize_tsendto(intsockfd,constvoid*buf,size_tlen,intflags,conststructsockaddr *dest_addr,socklen_taddrlen);ssize_trecvfrom(intsockfd,void*buf,size_tlen,intflags,structsockaddr *src_addr,socklen_t*addrlen); sendto()将缓冲区中的len字节数据...
解决方法2: 使用pread和pwrite,这两个函数自带偏移,就不存在先lseek在write/read的非原子操作问题了。 #include <unistd.h>ssize_t pread(intfd,void*buf, size_t nbytes,off_t offset); 返回值:成功:读到的字节数; 出错:-1ssize_t pwrite(intfd,void*buf, size_t nbytes,off_t offset); 返回值:成功...
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RLIMIT_CORE The maximum size, in bytes, of a core file created by this process. If the core file is larger than RLIMIT_CORE, the write is terminated at this value. If the limit is set to 0, then no core files are created. RLIMIT_CPU The maximum time, in seconds, of CPU time a...
Download all the URLs mentioned in the url-list.txt file # cat url-list.txt | xargs wget –c 12. ls command examples Display filesize in human readable format (e.g. KB, MB etc.,) $ ls -lh -rw-r--- 1 ramesh team-dev 8.9M Jun 12 15:27 arch-linux.txt.gz Order Files Based...
Note: If the log file size limit is reached and file rotation fails, for whatever reason, the existing log file is truncated and started anew. Default:1| Range: 0-1024 LogRemoteCommands Enable logging of the executed shell commands as warnings. Commands will be logged only if executed remote...
Interix supports memory-mapped files by using the mmap function. The length of the mapped space, in bytes, is rounded up to the nearest multiple of sysconf(_SC_PAGE_SIZE). This means that the value returned by sysconf(_SC_PAGE_SIZE) (or sysconf(_SC_PAGESIZE)) is not the virtual-...
static int __io_sqe_files_scm(struct io_ring_ctx *ctx, int nr, int offset)//ctx,thisfiles total { struct sock *sk = ctx->ring_sock->sk; // [1] sock 是最开始 io_uring 初始化的时候创建的 struct scm_fp_list *fpl; struct sk_buff *skb; int i, nr_files; fpl = kzalloc(size...