set user id

c++|object| objects C + + Persistent object Storage (persistent object Storage for C + +) Profile Description Object types allocate and release objects from memory the permanent object Protocol memory constructor open memory post++ installation

WinCE Project Development VS2008Write your own SQLite database management class code is as follows:SQLiteManager.csusingSystem.Data;usingSystem.Data.SQLite;usingSystem.IO;usingSystem.Reflection;namespaceteachhmi{ Public classSqlitemanager {

To create a directory:To create a directory with the mkdir function:mkdir (const char *pathname, mode_t mode)The parameter mode has the following combinations:S_isuid 04000 File execution when setting user ID(set User-id on execution) bit S_isgid

If statement format:If condition then statements [elif condition then statements ...] [Else statements] fiThe syntax for the most streamlined if command is:if TEST-COMMANDS; then CONSEQUENT-COMMANDS; fiThe IF condition judgment statement

This article mainly introduced the shell script if condition judgment and the judgment condition summary, this article first gave the IF condition judgment the grammar, then gave the commonly used judgment condition summary, needs Friend can refer

Special Permissions for Files--suid,guid,sticky,faclSUID (full name: Set user ID upon execution)1. functionTheoretical understanding: When a user runs a program, if the program has SUID permissions, then when the program runs as a process, the owner

SYS.C Code AnalysisSetregid/* * This is do bsd-style, with no consideration of the saved GID, except * so if you set the effective GID, it sets t He saved GID too. This * makes it possible for a setgid-completely drop its privileges, * which is

Objective:No matter what programming language is inseparable from conditional judgment. The shell is no exception.Copy CodeThe code is as follows:If List ThenDo something hereElif List ThenDo another thing hereElseDo something else hereFiEX1:Copy

Shell basic applications and examplesOne$# the number of arguments to the script$* displays all parameters passed to the script in a single string. Unlike positional variables, this option parameter can be more than 9$$ the current process ID number

One, process identificationProcess ID 0 is the dispatch process, often referred to as the interchange process (swapper). The process does not execute any program on disk-it is part of the kernel and is therefore referred to as a system process.

Writing the first shell scriptLike other languages, we use any kind of text editor, such as Nedit, Kedit, emacs, vi, etc. to write our shell program. The program must start with the following line (must be in the first line of the file):#!/bin/shThe

Http://wenku.baidu.com/link?url=9Q9VU54XuvlN77urP1zwOLVMMrS2EFNx4HcvFizdPl-zQy3K_ Ipd3o-mdu4sbihezumnq0blbwhusuaol_y6quvkxtgjiaem9gq9i-jb5_e Shell in the condition to determine if in the-Z to-D meaning 2011-09-05 [-a file] if the file The existence

The test command usage. Function: Check file and compare value 1) Judge the expression if test (expression is true) if test! expression is false test expression 1–a expression 22 expression is true test expression 1–o expression 22 expression has a

The way to compare two strings for equality is:If ["$test" x = "Test" x]; ThenHere are a few key points:1 using a single equals sign2 Note that there is a space on each side of the equal sign: This is the UNIX shell requirement3 Notice the last X of

This article describes the syntax of the shell, including variables in the shell, conditional judgments, control structures, and functions. In addition, all commands in this article are in variable condition control structure function. The next

Linux file permissionsEach file belongs to one user and one group. This is the core of the permissions model in Linux. Each file has a 10-tuple representing the file's type and file owner, the group user to which the file belongs, and other users '

This chapter mainly describes how to operate and manage the Linux system files and directories, mainly including the switch between directories, the creation and deletion of directories, the creation and deletion of files , file lookup, file content

Last week, the introduction of multithreaded programming, Linux under the multi-threaded, but also by fork to write multi-process programs, often can achieve the effect. But what is the difference between the two, and what are the advantages of each,

 use St_mode to determine file types in Linux2012-12-11 12:41 14214 People read Comments (4) favorite reports Classification:Linux (8)C + + (+)Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not

Shell condition judgmentIf List ThenDo something hereElif List ThenDo another thing hereElseDo something else hereFiEX1:#!/bin/shSystem= ' uname-s ' #获取操作系统类型, I'm local Linuxif [$SYSTEM = "Linux"]; Then #如果是linux的话打印linux字符串echo "Linux"elif