Linux Sh Script

You can use the flexibility inherent in the command shell of Linux to create scripting languages that help you simulate DOS commands in a Linux environment. 　　 　　The specific approach is as follows. If you are an IT support expert, you like the command of Windows very much, when you first use the Linux command line, you may soon find yourself confused. The DOS commands you've been familiar with for a long time don't exist in Linux. So you will find yourself facing a terrible task: to learn and be familiar with the whole ...

The Web server encountered a strange problem, in the running of many apache2 processes, there will be a process, slowly fill the full memory, and then the machine is like dead, write an automatic check script, check and kill the problem of the apache2 process, the issue is mitigated, but not resolved, Because it slowly fills up the memory, Linux releases the HDD cache and periodically has performance degradation. Using RLIMITMEM parameters to limit memory, also does not work, bw_mod limit traffic also does not work today modified the script, ...

Linux statistics in the directory under the size of the script is as follows: Save into total.sh, and then use total.sh absolute path, you can count the size of the directory under the path code: #!/bin/shdu $--max-depth=1 | Sort-n|awk ' {printf%7.2fm---->%s\n, $1/http://www.aliyun.com/zixun/aggregation/...

Script on /home/user/mysql_backup.sh crontab # crontab -l # m dom dom dow downgrade 28 16 * * * / home / user / m ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall after we installed the Linux Server Web environment a key installation package Lanmp, 　　There may be a lot of doubt there is the use of the process of the problem, the following for you to sum up a few more common, if there are other questions, you can go to the Wdlinux forum to find relevant tutorials. 1. About bound Fields ...

How to install Nutch and Hadoop to search for Web pages and mailing lists, there seem to be few articles on how to install Nutch using Hadoop (formerly DNFs) Distributed File Systems (HDFS) and MapReduce. The purpose of this tutorial is to explain how to run Nutch on a multi-node Hadoop file system, including the ability to index (crawl) and search for multiple machines, step-by-step. This document does not involve Nutch or Hadoop architecture. It just tells how to get the system ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall contact WDCP full name (Wdlinux control Panel) for more than 1 years it PHP is a set of domestic development based on the Linux VPS or server used on the panel, through the panel to operate can be completely abandoned with ssh command to operate the tedious, let ...

See how many active httpd scripts are in the Linux system? We can use the following shell script to view: #!/bin/shwhile (True) dopstree |grep "*\[httpd\]$" |sed ' s/.*-\ ([0-9][0-9]*\) \*\[httpd\]$/\1/' Sleep 3done

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology lobby site The most important is the data, but tomorrow manual backup is too cumbersome, and 8630.html" & gt; sometimes afraid to forget, especially the use of the VPs friend, perhaps the day IDC ran out of the finished, so today to prepare a copy of the MySQL database automatically script ...

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 ...