Linux (CentOS)--Package management Rpm,yum and human mission planning in Linux

Today, I'll simply hit a few codes and introduce another command I've read to understand:

Full RPM Red Package Manager, which was first applied to Red Hat operating system in 1997,

1.rpm Installing and uninstalling RPM packages

Rpm-q XX (package name) to find out if a package has been installed, display the package name if it is installed, and if it does not, show packages XX is not installed

RPM-QA all package names that have been installed in the query system

Rpm-qi querying the details of a specified package

RPM-QL Query the installation path and file list of the specified software

RPM-QC querying the specified package configuration file information

RPM-QF Query the development of the file and which software installation

Rpm-v XX (package name) to see which properties of the software have been modified

YUM (Yellow Dog Update modified (yeller update modified))

As with RPM, Yum is also used to load and unload software packages, Yum is RPM-based, but Yum is a bit more than rpm, and the RPM does not automatically install dependencies, and Yum can query the dependencies of the software itself and install it automatically.

Yum-y non-interactive installation, assuming that all the prompt questions and answers that appear during the installation are answered Yes

Yum install XX uses the Yum source installation package

Yum update xx uses the Yum source update package

Yum Check-update checks the Yum source for all available upgrades

Yum Remove xx Uninstall package

Yum list lists all the packages that the system has installed and that can be used in the Yum source

Yum info [...] View package Information

Yum clean all clears all cache information

Another introduction, the source code compiled to install the software

That is, download the compressed package, unzip the kind.

1. The source code we obtain, the general situation will be packaged into. tar.gz or. tar.bz2 format, we can use the tar command to extract

2. Run the Configure script, you can view the instructions through configure--HELP, some do not configure script, they directly provide makefile, you can directly make compile

3. Run make to compile the software source code into machine-recognized machine language

4. Install the software to the specified location in a specific manner, using the path and function set by Mark install based on the configuration phase.

SYSTEMCTL Management Service Commands

The configuration files for packages that we install via Yum or RPM are typically placed in this directory "/usr/lib/systemd/system"

We can manage these services through SYSTEMCTL.

Systemctl Start xx Startup service

Systemctl Stop xx Shutdown service

Systemctl Restart XX Restart Service

Systemctl enable XX boot start service

Systemctl Disable XX boot disabled service

Task Scheduler

1.at One-time mission plan

2.cron Recurring Task Scheduler

Linux (CentOS)--Package management Rpm,yum and human mission planning in Linux