More Command In Linux With Examples

If a computer needs to be managed by several people at the same time, it's best not to use the root account. Because if everyone uses the same permissions, it's hard to determine who is and where and what. sudo commands are used to solve this problem. The sudo command allows users defined in the/etc/sudoers configuration file to have temporary permissions to run commands that they cannot run under normal file access permissions. These commands can be either root or other users defined in the/etc/sudoers configuration file ...

There are three types of applications under Linux (Red Flag Linux default for tar packages and RPM packages): The tar packets are made by the UNIX system's packaged tools tar, such as example-1.2.3-1.tar.gz. RPM Package Red Hat offers a package package format, such as example-1.2.3-1.i386.rpm. DPKG Package Debain Linux provides a package packaging format, such as example ...

KDB Getting Started Guide debugging kernel issues, it is useful to be able to track kernel execution and see its memory and data structures. This functionality is provided by the built-in kernel debugger KDB in Linux. In this article, what do you know about &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Use the features provided by KDB and how to install and set up KD on a Linux machine ...

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SMTP server Code of Practice: Incoming messages. Check the address of the message. If the address of the message is a local address, save the message for retrieval. If it is a remote address, forward the message. The SMTP server features the same as the packet router, except that the SMTP service is dedicated to mail. Most SMTP servers can store and forward messages as needed. The SMTP server has security requirements on two different tasks: Protect the server from being compromised. The server must be equipped with protective armor to prevent external attacks, if the external offensive success will make the attackers unauthorized ...

This paper introduces how to build a network database application method by MySQL of the golden combination of Web database, PHP is a server-side embedded hypertext Processing language similar to Microsoft ASP, it is a powerful tool to build dynamic website. While MySQL is a lightweight SQL database server that runs on a variety of platforms, including Windows NT and Linux, and has a GPL version, MySQL is considered the best product for building a database-driven dynamic Web site. PHP, MySQL, and Apache are Linux ...

Note: This article starts in CSDN, reprint please indicate the source. "Editor's note" in the previous articles in the "Walking Cloud: CoreOS Practice Guide" series, ThoughtWorks's software engineer Linfan introduced CoreOS and its associated components and usage, which mentioned how to configure Systemd Managed system services using the unit file. This article will explain in detail the specific format of the unit file and the available parameters. Author Introduction: Linfan, born in the tail of it siege lions, Thoughtwor ...

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MongoDB company formerly known as 10gen, founded in 2007, in 2013 received a sum of 231 million U.S. dollars in financing, the company's market value has been increased to 1 billion U.S. dollar level, this height is well-known open source company Red Hat (founded in 1993) 20 's struggle results. High-performance, easy to expand has been the foothold of the MongoDB, while the specification of documents and interfaces to make it more popular with users, this point from the analysis of the results of Db-engines's score is not difficult to see-just 1 years, MongoDB finished the 7th ...

Http://www.aliyun.com/zixun/aggregation/13713.html ">hbase is a distributed, column-oriented open source database, rooted in a Google paper BigTable: A distributed storage system of structured data. HBase is an open-source implementation of Google BigTable, using Hadoop HDFs as its file storage system, using Hadoop mapreduce to handle ...