Linux

Zhanhailiang Date: 2014-12-08Make times "/usr/bin/ld:cannot find-lxxx" means that the compilation process cannot find the corresponding library file, where-lxxx represents the libxxx.so of the linked library file.There are several reasons why this

Ubuntu input su input password hint su:authentication failure problem Resolution:sudo passwd password: Your current password  enter New UNIX Password: This is the root password   retype New UNIX Password: duplicate root password   Then you will be

Linux under chkconfig command detailedThe Chkconfig command is primarily used to update (start or stop) and query run-level information for system services. Keep in mind that Chkconfig does not immediately automatically disable or activate a service,

Memory-related operational functions in the Linux kernel1, Kmalloc ()/kfree ()static __always_inline void *kmalloc (size_t size, gfp_t flags)The kernel space requests a memory area of the specified size and returns the virtual address of the kernel

Service network Restart after the completion of a click on the upper right corner of the computer design, connect, and later found that there is no need to "in the system-preferences-network connection" point to open "eth0", the above automatic

First, the maximum number of processes supported by the Linux systemLimit 1: Since the system uses pid_t to represent the process number, the maximum number of processes cannot exceed the maximum value of the pid_t type.Limit 2: Use the command

There are two Linux, one of which is broken, and then I'm going to hang the hard drive of this machine on another machine, and I want to see the file in the/tmp directory of this machine broken.The whole process is as follows:Ogin As:root[email

Reference This chapter begins with the discussion of the U-N I x system, which first describes the available file I/O functions-opening files, reading files, writing files, and so on.Most u N i x file I/O requires only 5 functions: O p e N, r e a D,

when we are testing or debugging, sometimes we will need to generate a size file, such as testing the storage system, you need to reduce the amount of disk space to 5G, the simplest way is to copy a 5G file, but from where to get files of such size,

/bin bin is the abbreviation for binary. This directory inherits the structure of the UNIX system and stores the commands most often used by the user. such as CP, LS, cat, and so on. here is a boot linux some of the core

OpenVPN Linux kernel version, defective partIIIreworkwithNetfilterMy buddy got juniper's offer and wished I could not stop on the Netfilter road after I had enough food. It was already late at night, recalling the past years of exploration on

Common commands in Linux O & M Analysis In addition to the omnipotent vi, you generally need to write down the following command View File Content: catDisplay files by PAGE: more, less Show file header and tail: tail head Content sorting: sort

Modify the password of the Mysql user (root) in Linux All modified users are in the root column.1. Have the original root password for myql;Method 1:Outside the mysql system, use mysqladmin#Mysqladmin-u root-p password "test123"Enter password:

Study Linux notes (3)Shell learning in Linux: The shell script file automatically executed after the user logs on to the system, which is configured in. bashrc.The/etc/profile file is used to configure system environment variables, such as jdk and

Use of dstat for process management in linux Dstat is a multi-function system resource monitoring tool that supports many features, such: cpu, memory, load, file lock, socket, network, process, paging file, file system, and so on can all be

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CentOS Nic replacement settings Today, one of the company's service hardware is broken, and the hard disk is pulled out, switched to another machine of the same model, and the mac address is changed to a new machine, later, it was discovered that

Enable. htaccess in CentOS Previously, all virtual hosts support. htaccess by default, while most centOS in Linux do not support. htaccess by default, and the importance of. htaccess is self-evident. Next let's take a look at how to enable support

Use the split command to split files in CentOS In the CentOS system, a small amount of log files may be generated if you do not pay attention to it. Even a few hundred MB of log files may be a waste of time for analysis. At this time, if you can

Nginx configuration rules enable the multi-site feature for WordPress When you enable the WordPress multi-site mode, you will be prompted to write a rewrite file to the. htaccess file, as shown below: 1234567891011 RewriteEngine