stat file

File Management du touch stat file rm cp mv VIM################################################Du: Estimating File space usageTouch: Create a fileStatFileRM: Deleting filesCP: Copy files, copy directoriesMV: Cut files, rename filesVim: Editing files#

#include #include #include #include #include int main (int argc, char *argv[]){struct STAT sb;struct TM *ptr;if (argc! = 2){fprintf (stderr, "Usage:%s \n", argv[0]);Exit (Exit_failure);}if (stat (argv[1], &sb) = =-1){Perror ("stat");Exit

[Email protected] ~]# stat/media/6fe5-d831/git-data/it-doc/Web favorite. txt File: '/media/6fe5-d831/git-data/it-doc/web collection. txt'Size:624Blocks: -IO Block:32768regular filedevice:b301h/45825d Inode:251Links:1Access: (0755/-rwxr-xr-x) Uid: ( -

Disk block size = 1024 Create an empty directory [[Email protected] A] # ll-d Drwxr-XR-X. 2 root Root 4096 September 8 21:12. [[Email protected] A] # ll Total usage 0 [[Email protected] A] # [[Email protected] A] # stat. File :"." Size: 4096

1. First understand the/proc/STAT File Information In Linux/Unix, CPU utilization is divided into user-state, system-state, and idle state, indicating the time when the CPU is in user-state, and the time when the system kernel is executed, and the

Http://ilinuxkernel.com/?cat=4Linux CPU Utilization principle and accuracy analysis1 CPU Usage Calculation principleUnder Linux/unix, CPU utilization is divided into user state, System State and idle state, which indicate the time that the CPU is in

Calculates the total CPU utilization Totalcpuuse 1) Samples Two short enough time interval CPU snapshots, that is, read/proc/stat files, get the following data for two points: CPUT1 (user1, Nice1, System1, Idle1, IOW Ait1, Irq1, softirq1,

In linux, you can use top or vmstat to view the system's CPU usage. In most cases, the CPU usage is accurate, but in real-time linux systems with high time precision, the CPU usage measured by top may be inaccurate. The following uses the top

Generally, for processes that require a large amount of CPU computing, the higher the front-end pressure, the higher the CPU utilization. However, for I/O network-intensive processes, even if there are many requests, the CPU of the server may not be

Problem:Run the vmstat, top, and PS aux commands to view the CPU usage of the process. The value varies greatly. Example:Use vmstat to view the system's CPU idle rate. The ID is the CPU idle rate. It can be seen that the idle rate is always above 73

Delete the log file 3 days ago. Fatalerror: I don't know PHP. now I want to implement a function to delete the files (logs) from the specified directory three days ago ), the following PHPcodefunctiondel_directory ($ dir) {deletes the log file 3

The custom common Files and directories operation function library, in the win and Linux platform to do cross-platform processing. (Cross-platform processing can be used as a reference comparison.) In the win directory the symbol can be \ or/, but

Under Windows, a file has: creation time, modification time, access time.And under Linux, a file also has three kinds of time, namely: Access time, modification time, state change time.There is a difference between the two, there is no concept of

Reprinted from: http://blog.csdn.net/pppjob/article/details/4060336Under Linux, CPU utilization is divided into user state, System State and idle state, respectively, the CPU is in user state execution time, system kernel execution time, and idle

Http://blog.csdn.net/nineday/archive/2007/12/11/1928847.aspx Under Linux, CPU utilization is divided into user state, System State and idle state, respectively, the CPU in user state execution time, system kernel execution time, and idle system

Article Title: how to obtain cpu utilization in linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. "The

1. What are the file management commands on Linux, their common use methods and their related examplesTouch: Create file and Refresh TimestampTouch [OPTION]. FILE:"1" touch-c file name: Refreshes the timestamp of the file if the file already exists,

BKJIA original] Proc is a virtual file system, which is mounted on the/proc directory in Linux. Proc has multiple features, including the ability for users to access kernel information or to troubleshoot issues. One of these features is very useful,

In the previous blog post, I introduced a few commonly used functions in the ZMALLOC.C file, and then introduced the other functions in the file, in fact, many of the functions in this article are more interesting than the functions in the previous

Python file operation api (file operation function ), Operations on files and folders (file operation functions) in python involve the OS module and the shutil module. Get the current working directory, that is, the directory path for the current