Shell

Hardware Chapter CPU-related lscpu #查看的是cpu的统计信息. cat /proc/cpuinfo #查看CPU信息具体信息, such as the model of each CPU, frequency, etc. Memory-related free-m #概要查看内存情况 the unit here

Linux command and ShellThe so-called Shell is the command interpreter, which provides programming interfaces that can be programmed using programs. Learning the shell is very important for Linux beginners to understand Linux systems. LThe shell of

Give you a full, you in the Linux environment to try to understand more:The execution name of this program$n the nth parameter value of this program, n=1..9$* all parameters of this program, this option can have more than 9 parameters.$# the number

The logical operators of the shell involve the following types, so as long as the appropriate choice, can solve our many complex judgments, to achieve a multiplier effect.First, the logical operator Logical Volume Label Express

Shell Popular Understanding: Translate user-entered commands to the operating system.The Shell is an interactive command interpreter. The shell is independent of the operating system, which gives the user the flexibility to choose the right shell

#!/bin/bashEcho"Enter The old IP:"$1Echo"Enter The new IP:"$2if[[ $1==""]];thenEcho"Usage: + $ Enter the new ip:$1"Echo"Usage: $ Enter the old ip:$2"Exit0FiI=0 forLineinch' Ls/etc/sysconfig/network-scripts | Grep-e"Ifcfg-em|ifcfg-eth"` Dostrip= '

A point set is given to find the maximum Triangle Area of the vertex in the point set. We know that the three points of the Triangle must be on the convex hull. After finding the convex hull, we cannot enumerate it. Because N is a large question,

Recently, Google was completely banned, and the code hosted on the Google SVN server was inaccessible.It's a waste of things. I unloaded the slow Win8 running in my old notebook, installed Ubuntu, mounted the svn server, and managed some personal

1. The system does not recognize the disk being inserted into Linux. When the device is restarted, let the system find the new disk: Echo "SCSI add_single_device 0 0 0 1 0">/proc/SCSI Remove the Added Disk: Echo "SCSI remove_single_device 0 0 0 1

The structure features of all return texts are as follows: If the number of characters is an even number, it is structured as: A Character Sequence is connected to another character sequence with the same but the opposite order. If the number of

1. Introduction to hadoop1.1.0 Hadoop is a distributed storage and computing platform suitable for big data. Hadoop core consists of HDFS and mapreduce HDFS is a master-slave structure with only one master node and namenode: There are many

/* Configure /*------------------------------------------------------------------------------------------- @ Blackeye poet Optional --------------------------------------------------------------------------------------------*/ I. wildcard

Execute another shell script in the shell scriptYou can execute another shell script (or non-executable file, mainly used to obtain the value of some variables) in one shell script :. file name (including path) or variable = file name (including

Disassembling script header_start=0header_len=15xref_start=$(strings -a -t d $1 | grep -e "\bxref\b" | awk ‘{print $1}‘)trailer_start=$(strings -a -t d $1 | grep -e "\btrailer\b" | awk ‘{print $1}‘)#echo $xref_start#echo

Introduction:In the previous article, the incremental data in Oracle10g is imported into hive0.13.1, and the master table in hive is updated. http://blog.csdn.net/u010967382/article/details/38735381 describes the principle of incremental update hive

There are many blank lines after extracting the log files to be viewed recently, which is not conducive to the comparison of previous files. In order to be backward compatible, only empty lines can be deleted when obtained. I googled myself and used

#! /Bin/bashExport AT1 = "/usr/local/export AT1 /"Tomcat2 = "/usr/local/tomcat2 /"Tomcat3 = "/usr/local/tomcat3 /"Tomcat4 = "/usr/local/tomcat4 /"Tomcat = ($ tomcat1 $ tomcat2 $ tomcat3 $ tomcat4)# For (I = 0; I # $ {Tomcat [$ I]} bin/shutdown.

[Copyright statement: reprinted. Please retain the Source: blog.csdn.net/gentleliu. Mail: shallnew at 163 dot com] In most cases, the print statement of the awk can complete the task, but sometimes we need more. In those cases, awk provides two well-

Requirement: traverse all APK installation packages and install them in batches. Idea: there should be many ways to implement it, but I am not familiar with shell commands. I chose the simplest one. The find command should be simpler and updated

Use zjdroid to unshell an APK that is encrypted and shelled. Although this cainiao has some coding experience, it is the first time to crack the code. This time I encountered some problems when I used zjdroid to shell an APK, So I recorded that I