man strcat

Command function: Find binary Files locationFind the location of the software's configuration fileFind source code file locationView the man manual location Grammar The basic syntax is as follows: Whereis commandORWhereis ProgramORWhereis

Pam Full name: Pluggable Authentication Modules, Chinese name is "pluggable authentication module ".It is a unified authentication solution. Pam allows you to change your authentication methods and requirements at any time, and encapsulates all

Static libraries, dynamic libraries in UNIX terms, or archive files (archive often end with. A) and shared objects (share object often starts with lib. So end) more accurately. A static library, a dynamic library may be a term under windows, but the

Basic ConceptsStrings can be assigned to different areas of memory, typically using pointers to support string manipulation. A string is a sequence of characters ending with an ASCII character Nul. The ASCII character Nul is represented as a.

In-depth understanding of the C-pointer V: Pointers and stringsBasic conceptsStrings can be assigned to different areas of memory, typically using pointers to support string manipulation. A string is a sequence of characters ending with an ASCII

Before you start, let's take a look at the following C ++ code.   // Definition of function read_file // return the file's data in string string read_file (string file_name = "test_data.txt ") { ifstream file (file_name.c_str (); ostringstream

1. The character pointer can point to a string. We can use string constants to initialize character pointers. For example, there are instructions: Char * STR = "this is a string ."; Is to initialize the character pointer. In this case, the character

1. The character pointer can point to a string. We can initialize the character pointer with a string constant. For example, there is a description statement:Char *str = "This is a string.";is to initialize the character pointer. At this point, the

Linux multi-process learning and Linux Process Learning1Linux Process Overview a process is a process executed once by a program. It is essentially different from a program. The program is static. It is a set of commands stored on disks in sequence.

Socket Programming OverviewWhen it comes to the network programming must be inseparable from the socket, used to most of the time by writing down its usage, this time hope to understand some of the lower level of things, of course, these are the