Cognitive impairment of Linux, Yum source

Let me talk about Linux-specific dependencies , yum it is to solve dependencies yum source is equivalent to a directory entry when the mechanism we use yum to install the software, if you need to install depend on software, yum yum mechanism will be based on the source of the definition A good path to find dependent software, and install the dependent software .

YUM

  Yellow dog Update Modified (improved, modified) is a package manager, Yum automatically downloads the rpm package from the specified place (the rpm package address of the relevant website or the local rpm path), and installs it, which can be very good Solve dependency problems.

Server: All rpm packages are stored on the server, and then a related function area analyzes the dependency relationship of each rpm file, and records these data as files and stores them in a specific directory of the server.

Client: Download the dependency file (www or ftp) recorded on the server online, analyze the recorded data downloaded by the server, and then obtain the relevant software to download all at once for installation.



Two kinds of yum sources:
                              local yum sources: file:/// , and network yum sources http://, https://, ftp:// to

build a local yum source, we must first have a file package to provide the source, generally The image file iso of the Linux system contains the rpm file needed to build the yum source. You


 must determine the location of the iso image file. In fact, it is because the iso file contains the rpm package required by the yum source, so you can install it in the next step. Load