GDB is used under Linux to debug a software, here, I only record the usual often used knowledge points, what to use, to record what, in the debugging environment to familiarize with debugging methods and debugging tools, this will deepen
Dual NIC BindingAdvantages: If one network card is hung off, another network card can be replaced, the normal provision of IPThe premise server is a dual NIC, and on the same mvent1. Edit
Vim ~/.VIMRC writes the set NU and automatically displays line numbers after using Vim.
Shift + V Row Select x Delete
U Undo Ctrl + R anti-undo
File test.c to view files of type
Du./-sh View disk space
Clear = Ctrl + L Quick
Our installation system: Redhat Linux as 4 2.6.9Function: Use Gnokii to send SMS via external modem on the server.Installed software: gnokiiHardware: GPRS modem equipment One, phone card oneBefore I install Gnokii, I must install the gettext-devel-0
GLIBC is the GNU published libc Library , the C runtime library. GLIBC is the lowest-level API in a Linux system, and almost any other runtime relies on glibc. GLIBC In addition to encapsulating the system services provided by the Linux operating
View system information on Ubuntu Platform using command mode1. List all PCI devices: LSPCIDisplays all PCI devices in the system, Parameter V: View hardware details, n, view vendor and device codes, x, display binary data for hardware setup
(1) Lsb_release command view a command for the LSB (Linux standard Base) standards developed by FSG (Free Standards Group) to view distribution information for Linux compatibility[Email protected] oracle]# lsb_release-hFSG Lsb_release v2.0 Prints
creat PROCESS
Fork ()|Clone (parameter, which determines the shared content of the parent-child function)|do_fork ()|copy_process ()|dup_task_struct ()Create a child processKernel Stacks, copy the parent process'sProcess Descriptor
First, the experimental environment:RHEL1--DHCP Server--ip:192.168.1.20/24client--xp--Get IP between 192.168.1.20-192.168.1.100Second, the specific configuration steps:(1.) Service side:1. Install the DHCP server-side software:650) this.width=650;
Remember the Chinese Qi and master most of the linuxform see a sentence.Now on their shelves after lkd2+ldd3+ scenario analysis, coupled with its ulk3, the bookshelf of the Linux kernel Siku book has been gathered, very substantial.Lkd2: Belongs in
--linux command:1. CD switch directory CD. /Switch to Parent directory2. LS Display file list3, SH run sh file./***.sh can also run the Sh file4, Ps-efa|grep WebLogic--Check process display results:User name user ID process ID details5. kill-9
define aliases directlyEdit the. bashrc file under the current User:Vim ~/.BASHRCTo add a command statement that is aliased to Lmysql:Alias lmysql= ' mysql-uroot-p-dtest--default-character-set=utf8--auto-rehash 'To make it effective
Usually, after we connect to the Linux system via the terminal, we can see the limit of the file descriptor of this login session, as follows: Ulimit-n command.$ulimit-N1024Of course, this restriction can be modified by the Ulimit-shn 102400 command,
To http://www.open-mpi.org/download Openmpi and unzip, pre-install GCC or g++.I am openmpi-1.6.5, go to unzip folder, execute./configureThis step takes longer to execute if configure:error:c++ preprocessor "/lib/cpp" fails sanity check error
Linux the process communication methods in the system are mainly the following:How processes communicate on the same host* UNIX interprocess communication: including pipes (pipe), famous pipes (FIFO), and Signals (Signal)* System V Process
Linux forgets the root password, and linux forgets the root password.We often encounter a situation where we forget the root password. Here is the solution,This method uses the vast majority of Linux releases:1. First go to grub2. At the entrance to
Linux Command scp command detailsScpCopy files between different linux HostsIs a file copy with Security, ssh-based login.Some linux distributions do not have their own scp, so you need to install scp. Install the following in centos:# Yum-y install
Linux boot process details
What has been done by the computer from pressing the power key to logon success? Let me explain it in detail.
The process can be summarized as follows:
I. BIOSWhen you press the computer power key, the computer will read
Centos6.4 nginx + mysql + php integration phpmyadmin error solution, centos6.4nginx
An error occurred while integrating phpmyadmin in centos today. The error message is as follows:
Error during session start; please check your PHP and/or webserver
Linux Knowledge Point CollectionFile Name
In Linux, the file name of each file or directory can contain a maximum of 255 characters, and a full path can contain a maximum of 4096 characters;
Since Linux has some command operation relationships under
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