how to count bytes

Original link: http://www.cnblogs.com/MyFavorite/archive/2010/10/19/1855758.html1. About Inputstream.read ()When reading data from a data stream, it is easy to use the Inputstream.read () method for diagrams.     This method is to read one byte at a

Original URL: http://www.cnblogs.com/peida/archive/2012/12/18/2822758.htmlThe function of the WC (Word Count) command in a Linux system is to count the number of bytes, words, and lines in the specified file, and to display the output of the

a brief introduction to WC The WC command is used to print the number of lines of text, number of words, number of bytes, and so on (print the newlines, words, and bytes in files). In Windows Word has a "word count" tool, you can help us to the

C Language File operationsI. Reading and writing of standard documents1. Opening of the fileThe open operation of the fopen () file indicates that the user-specified file will be allocated in memory with a single file structure and a pointer to the

1. About Inputstream.read ()When reading data from a data stream, it is easy to use the Inputstream.read () method for diagrams.     This method is to read one byte at a time from the stream and is very inefficient. A better approach is to read

WC in a Linux system (Word Count) the function of the command is to count the number of bytes, words, and lines in the specified file, and to display the output of the statistic results. 1. command format:WC [Options] File ...2. command function:

= = = File io====Linux system IO operations use file descriptors to represent open files, a non-negativeInteger, which is used to refer to all types of open files, including pipelines, FIFO, network socketsWords, terminals, devices and general files.

Ubuntu is a free, open source, Debian-based Linux distribution. On the basis of Ubuntu, but also derived from other features of the Linux distribution. The first is an operating system that is used to manage computer hardware. To play the role of

WC commandWC in a Linux system (Word Count) the function of the command is to count the number of bytes, words, and lines in the specified file, and to display the output of the statistic results. 1. command format:WC [Options] File ...2. Command

memcmp is a comparisonMemorythe first count bytes of the zone Buf1 and Buf2. Thefunctionis bybytescompared to the. header File#include int memcmp (const void *BUF1, const void *BUF2, unsigned int count);compares the memory area BUF1 and the first

1) String manipulationstrcpy (P, p1) copy stringstrncpy (P, p1, N) copy the specified length stringStrcat (P, p1) Append stringStrncat (P, p1, N) append specified length stringStrlen (p) Take string lengthstrcmp (P, p1) comparison stringSTRCASECMP

Linux programming-memoir 2: A memoir of linux Programming === File IO ====Linux I/O operations use file descriptors to represent open files, a non-negativeAn integer used to indicate all types of open files, including pipelines, FIFO, and network

Function Name: strncpyFunction: Copy stringsUsage: char * strncpy (char * Destin, char * Source, int maxlen );MemcpyFunction: Copy n Bytes from the source to the target Destin. One test string and one copy of memory contentStrncpyPrototype:

/*File: String. h# Ifndef _ linux_string_h _# DEFINE _ linux_string_h _ /* We don't want strings. h stuff being user by user stuff by accident */ # Ifdef _ KERNEL __ # Include /* For size_t */# Include /* For null */# Include /* for inline

Network checksum Calculation 1. Preface Checksum calculation is the basic function of NAT and content modification. After performing these operations, you must modify the checksum in the Data header. 2. 16-bit checksum Calculation 2.1 Basic

Guidance:　　Secrets of Linux kernel debugger KDB Getting Started GuideIt is useful to track kernel execution and view its memory and data structure when debugging kernel problems. The built-in inner-core debugger KDB in Linux provides this function.

1. tTime to tbuf type Tbuf thetime; // stores the converted timeTTime tt;TT. hometime ();_ Partition (ktimeformat, "% Y % m % d % 1-% 2-% 3% H: % T: % s"); // format: 12:12:12TT. formatl (thetime, ktimeformat); // formatl () will format the time in

I. PrefaceThe new version of Foxmail provides the "express mail" function. At first, I did not know how to use it. Later I learned to set the IP address of the local DNS server in tools> System Options.I think this new function is quite useful. You

Symbian basic class Summary Class summary:Four kings: caknapplication, ceikdocument, caknappui, and caknview Void caknappui: dyninitmenupanel (tint aresourceid, ceikmenupane * amenupane) Called before the menu pane is displayed, it is mainly

The shared download site is what we call an FTP server. FTP stands for the English file transfer protocol, which means the file transfer protocol in Chinese. Through the FTP protocol, users can transfer files between two computers connected to the