Linux

Vsftpd configuration file:/etc/vsftpd. conf Anonymous_enable = Yes # Global write variableWrite_enable = Yes Anon_upload_enable = Yes Anon_mkdir_write_enable = Yes # Allows anonymous users to create and upload other permissions, such as

  Http://www.ibm.com/Search? Q = % E5 % 85% B1 % E4 % Ba % AB % E5 % 86% 85% E5 % ad % 98 & V = 16 & en = UTF & lang = ZH & CC = cn & search = % E6 % 90% 9C % E7 % B4 % A2   Linux inter-process communication: Shared Memory (on)

The problem is as follows:1/qmake-Project2/qmake3/make compilation Error G ++-O hello. O main. O moc_hello.o-L/root/qt-2.3.7/lib-L/usr/x11r6/lib-lqt-MT-xext-1x11-1 m/Usr/bin/ld: cannot FID-lqt-MTCollect2: LD returned 1 exit statusMake: *** [Hello]

  In Linux, you can view the memory status through commands, such # More/proc/meminfoMemtotal: 16423848 KBMemfree: 3008348 KBBuffers': 272916 KBCached: 12539184 KBSwapcached: 0 KBActive: 3473960 KBInactive: 9512632 KBHightotal: 0 KBHighfree: 0

1) OverviewThe file descriptor returned by the open system call is non-negative integer.Each process has its own set of file descriptors.When creating a process, there are usually three open file descriptors (0, 1, 2). 0 represents the standard

A zombie process means that the parent process has exited, and the dead process becomes a zombie process without being accepted by the process. How to generate botnets: When a process calls the exit command to end its own life, it is not actually

Linux users become sudoer)When using your own user to log on to Linux, you can avoid using the root user to delete some items by mistake, but some commands must be used by the root user, so using sudo is a good choice! Sudo command At this time,

1. alsasound ALSA Sound Card Driver support. The ALSA sound card driver was originally written for a sound card gravis ultrasound (GUS). The program was proven to be excellent, so the author began to write drivers for a general sound card. ALSA is

In the previous article-Linux inter-process communication-using anonymous pipelines, we saw how to use anonymous pipelines to transmit data between processes, and also saw a defect in this method, these processes are started by a common ancestor

Document directory Index: Condition variable (condition variable) It is also a device used for synchronization. It allows a process (or thread) to suspend itself and wait for the state of a conditional variable to be changed.There are several

Create directory: Mkdir directory Mkdir [-M] [-p] Directory -M: Specifies the attribute. You can also use the CHMOD command to modify the attribute later. -P specifies the directory. By default, a new directory is created in the current directory.

2013.5.9 1. Install VMware Tools. When the VMware Tools provided by the virtual machine is installed in the last step, Prompt Initializing... this configuration program is to be executed in a virtual machine. execution aborted. VMware Tools

Chgrp: Change the groupChown: Change the ownerChmod: Change the permission Chgrp [-R] dirname/filename ...... For example:Chgrp users install. Log Chown [-R] username dirname/filename For example:Chown root: Root install. Log Chmod [-R] xyz

JavaRing Environment Security Installation Step 1: Download a JDK such as: jdk-1_5_0_06-linux-i586.bin on the java.sun.com website   Step 2: unzip JDK such as: jdk-1_5_0_06-linux-i586.bin   Step 3: Copy all decompressed files

1. sz command The SZ command uses the zmodem protocol to transmit files from a Linux server to a local device. one or more files can be transferred at a time. Corresponding slave... Description The SZ command uses the zmodem protocol to transmit

  We have already introduced the parsing and use of vmstat and top commands. Next we will learn a more important command SAR.The SAR command can view the usage of a specific part of the system through parameters. Common formats of SAR command lines:

Method 1 1. Run the lsof command to view the PIDIPv4 [root@test proc]# lsof -Pnl +M -i4 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME java 1419 1401 10u IPv4 6793357 TCP *:8453 (LISTEN) AutonomyD 6147 14

1. lxcbr0 When use_lxc_bridge = "true" in/etc/default/lxc, lxcbr0 is automatically created at lxc startup and assigned the IP address 10.0.3.1, the lxc instance of this bridge can assign IP addresses from 10.0.3.0/24. A dnsmasq instance runs in the

Eventfd is available in kernel Versions later than 2.6.22. Run the uname-R command to view the kernel version.1 # include Int eventfd (unsigned int initval, int flags ); This function creates an event object to implement the wait/notify mechanism

Mprotect: Set the memory access permission The third parameter of MMAP specifies the protection for the memory area, which is obtained by the prot_read, prot_write, and prot_exec operations that mark the read, write, and execute permissions, or by