Linux

When you enable the linux routing function, high-level routers can connect different hardware devices and translate many different packet formats. Generally, the prices are not cheap! In this section, we do not want to discuss such high-level things.

There are three methods for executing scripts in linux. /bar. sh is executed in the sub-process of the folk... /bar. sh is. /bar. sh Content is read to the current running environment and execute exec. /bar. sh is to replace the current process.

Check the kernel version installed on the local system by deleting excess kernels in the fedora system: $ rpm-q kernel or $ rpm-qa | grep 'kernel * 'deletes the specified z kernel version www.2cto.com $ sudo rpm-e kernel -*. *. *-*. fc *. xxx $ su-c

I have learned a lot about installing the DNS + Sendmail service and Sendmail service in Linux. I will explain how to install the DNS + Sendmail service in Linux. Detailed DNS configuration process at www.2cto.com 1. set the host name

To modify a binary file, use vim to open the file to be edited or viewed in binary format. If you do not use the-B parameter, conversion errors may occur. For details, refer to the section after the separator line. Www.2cto.com vim-B

Fedora tries to configure the java environment in the newly installed fedora by using the two required plug-ins before yum. However, it finds that the installation speed is very slow when using yum. After checking the information, it finds that two

How to view the installation path of the rpm installation package rpm-qpl xxxxxx. rpm 1. How to install the rpm package rmp package can be completed using the program rpm. Run the following command rpm-I your-package.rpm where the your-package.rpm

Linux uglifyjs recently learned linux shell scripts and tried to write a uglifyjs batch compression script. It is not easy to write. Please give me more advice. Www.2cto.com environment: ubuntu 12.10 64bit./bash/node 0.8.15/uglifyjs 2 Shell script: 0

The RedHat RHEL 6.1 Method for installing gcc recently in tossing RedHat, the version I installed is the rhel-server-6.1-x86_64. By default, RHEL 6.1 does not have the gcc and gcc-c ++ environments, and I do not have $ to buy genuine services. You

How to adjust the hard disk size of a VMware Linux Virtual Machine VMware how to adjust the hard disk size of a Linux virtual machine if the hard disk space of a pre-Installed VMware Linux virtual machine is too small, it is quite troublesome to

The dstat System Monitoring command dstat is a powerful monitoring system software that integrates the functions of vmstat, iostat, netstat, and ifstat. High scalability. Www.2cto.com # dstat ---- total-cpu-usage -----dsk/total-net/total---- paging -

It is found that although a machine has established a trust relationship, it still cannot log on through the trust relationship, checking many places ....1 ,~ /. Ssh directory permission2 ,~ /. Ssh/File Permission3. A new public key is generated on

Introduction to popen () FunctionsFunction DefinitionFILE * popen (const char * command, const char * type );Int pclose (FILE * stream );Function DescriptionThe popen () function creates a pipeline, calls fork to generate a sub-process, and executes

ClusterGenerally speaking, a cluster is an architecture that combines several electric brain cells in a certain way to complete each specific task.Load balancing and LB can achieve load balancing to a certain extent to achieve high availability.HA,

Install: fooInstall-m 644 foo/usr/bin. PHONY: installLet's take a look at the makefile snippet and use the. PHONY object. The following describes her usage in detail.Source: Click to open the link. PHONY is a special purpose (special target)It is

1. Basic concepts involved in the daemon 1.1 Process Group1.1.1 basic concepts of Process GroupsA process group is a collection of one or more processes that receive various signals from the same terminal. Each running program or command generates a

Linux has been installed continuously recently. It is basically installed in various Release versions. It may be the concept of preemptible, and fc15 + gnome3 is preferred, although both ubuntu and opensuse have been combined with gnome3, it is not

Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that memory to become free. To free pagecache: Echo 1>/proc/sys/vm/drop_cachesTo free dentries and inodes: Echo 2>/proc/sys/vm/drop_cachesTo free

Robust sedIn the second sed article, I provided some examples to demonstrate the working principle of sed, but few examples of them can actually do something particularly useful. In the last article of this sed series, I want to change that method

Yum uses a Local CD as a software repository to automatically detect dependencies and install dependent packages.1. Mount the optical drive# Mount/dev/cdrom/mnt2. Back up the original software warehouse configuration file# Cp-a/etc/yum. repos.