Linux Command To Display First 10 Lines In A File

The .htaccess file allows us to modify some server settings for a particular directory and its subdirectories. Although this type of configuration is best handled in the section of the server's own configuration file, sometimes we do not have permission to access this configuration file at all, especially when We are on a shared hosting host, and most shared hosting providers only allow us to change server behavior in .htaccess. .htaccess file is a simple text file, note the "." before the file name is very important, we can use your favorite text editor ...

You can use the Head command to see the beginning of a file. This command is: Head <filehttp://www.aliyun.com/zixun/aggregation/11696.html ' >name> Head is a useful command, but since it is limited to the first few lines of the file, You can't see how long the file actually is. By default, you can only read the first 10 lines of the file. You can change the number of rows to display by specifying a number option ...

There are a number of very useful tools available for Linux administrators to choose from. Here, I'm just enumerating 5 of the tools that Linux administrators need to use in their day-to-day operations. I think that the most powerful tools may not be appropriate for your use, and there are certain tools I forgot to count them in, and if so, I implore you to write down the tools I didn't include in the comments. In addition, the tools mentioned in this article are only optional, not everyone must need them, and the tools that are not mentioned are not meant to be used by Linux administrators, like s ...

Refer to Hadoop_hdfs system dual-machine hot standby scheme. PDF, after the test has been added to the two-machine hot backup scheme for Hadoopnamenode 1, foreword currently hadoop-0.20.2 does not provide a backup of name node, just provides a secondary node, although it is somewhat able to guarantee a backup of name node, when the machine where name node resides ...

1, Cluster strategy analysis: I have only 3 computers, two ASUS notebook i7, i3 processor, a desktop PENTIUM4 processor. To better test zookeeper capabilities, we need 6 Ubuntu (Ubuntu 14.04.3 LTS) hosts in total. The following is my host distribution policy: i7: Open 4 Ubuntu virtual machines are virtual machine name memory hard disk network connection Master 1G 20G bridge master2 1G 20G ...