Linux

1. Find the process number of the program2, GDB program name process number GDB lobby 480123, set breakpoints the following excerpt from the blog: http://www.cnblogs.com/TianFang/archive/2013/01/20/2868889.htmlAfter starting GDB, the first thing to

The function of the DF command in Linux is to check the disk space usage of the Linux server's file system. You can use this command to get information about how much space the hard disk is taking up, and how much space is left.1. Command format:DF [

Aptitude:aptitude is a very magical package manager in the Debian Gnu/linux system, based on the famous APT mechanism, which integrates all the functions of Dselect and Apt-get and provides more features, especially in dependency processing.Some

A tarball (tar.gz file) is compressed tar archive.The TAR program provides the ability to create tar archives, as well as various other kinds of manipulation. For example, you can use the Tar on previously created archives-extract files, to-store

The "Memory" here includes physical memory and virtual memory, which extends the computer's memory space to the hard disk, the physical memory (RAM) and a portion of the hard disk space (SWAP) together as virtual memory provides a consistent virtual

#!/bin/bashDate= ' echo $ (date +%y\-%m\-%d\%h:%m:%s) 'Hostname= ' HostName 'ip= ' Ifconfig eth0 | grep "inet addr" | Cut-f 2-d ":" | Cut-f 1-d "" 'serverinfo= ' echo-e '--------$Date--------\ n server: $HostName IP: $IP "'#删除5天前的监控日志Logpwd=/var/log/

The NL command is used in a Linux system to calculate the line number of a file. NL can automatically add a line number to the output file content! The default result is a bit different from Cat-n, NL can make the line number more display design,

Then last time, the last time you just implemented a local automation deployment, which is only applicable for the development environment and the deployment environment on the same machine. However, in general, we will deploy the project to a

1. Overview:Crond is a daemon that is used to periodically perform certain tasks or wait for certain events under Linux, similar to Scheduled tasks under Windows, when the operating system is installed, the Service tool is installed by default and

Some of the content is from: Linux Kernel Development (third Edition), Robert love, Chen Li June and other translations.1. ProcessA process is a real-time result of an executing program code that contains an open file, a pending signal, and so on. A

/root directory/bin storing the necessary commands/boot Store the kernel and the files needed to boot/dev Store Hardware device files/etc Store System configuration fileHome directory for normal user, user data is stored in its main directory/lib

$sudo fdisks-lBasic skills, format the command to format the/DEV/SDB4 partition for example: $ sudo umount/dev/sdb4 # You must first unmount the partition# formatted FAT partition $ sudo mkfs.vfat- FThe/DEV/SDB4 #-F parameter must be capitalized,

An IP address is represented by a decimal number separated by a decimal point, which we call dotted decimal notation. Each of these decimal numbers represents a single byte of unsigned value (according to the network byte order) because each byte is

1. Linux is essentially the core of an operating system and the core tools it provides. He is the GNU GPL licensing model, so that anyone can get the original code and executable this core Asmeamerican sequence, and can be modified. In addition,

Summarizes the compression and decompression methods of compressed packets in various formats under Linux. But part of the method I did not use, also is not whole, I will revise perfect at any time!. tarUnpacking: Tar xvf Filename.tarPackage: Tar

The samba under Linux is very useful, and many people take it as a shared file server,By default, samba must provide a username and password to access, if it is accessible to everyone, then it is more troublesome, in fact, through a setup, you can

network programming in Linux is implemented through sockets (sockets).There are three types of sockets: Streaming sockets (SOCK_STREAM) streaming sockets can provide a reliable, connection-oriented traffic flow that uses the TCP protocol. TCP

TCP multi-threaded concurrent server multithreaded servers are improvements to multi-process servers, because the multi-process server consumes large system resources when it creates the process, so instead of a process with threads, the service

1. PstreePstreedisplaying processes in a tree structure$ pstree-p Work | grep adSSHD (22669)---bash (22670)---ad_preprocess (4551)-+-{ad_preprocess} (4552)|-{ad_preprocess} (4553)|-{ad_preprocess} (4554)|-{ad_preprocess} (4555)|-{ad_preprocess} (4556

Is not in the sudoers file in Ubuntu In Ubuntu12.04, when sudo apt-get install XXX is used, the username is not in the sudoers file problem suddenly exists. Then I checked the username type, which is a standard user instead of an administrator