Shell

#!/bin/bashCd/usr/local/src./installmysql./installnginx./installphp./installhaproxy./installkeepalivedtouch/usr/local/nginx/html/phpinfo.phpEcho-e "/usr/local/nginx/html/phpinfo.php#!/bin/bashCd/usr/local/srcTar zxvf cmake-2.8.5.tar.gzCD cmake-2.8.5.

[Email protected] bin]$ sh-n restart.sh[Email protected] bin]$-N: Do not execute script, just check the syntax, if there is no output correctly, if there is an error, you will be prompted[Email protected] bin]$ sh-x restart.sh+

One: Shell Programming basicsShell definition: The shell is a program that acts as an interface between a user and a Linux system. It allows the user to enter commands that need to be executed to the operating system. There are many shells in the

function allows us to divide a complex function into several modules, which makes the program structure clearer and the code reuse more efficient. Like other programming languages, the Shell supports functions as well. The Shell function must first

1. What is Shell The shell is the user interface of the system and provides an interface (command interpreter) for the user to interact with the kernel. The shell receives the user's input command and feeds it into the kernel to perform the

The case name in the shell under Linux is similar to the switch in C + +, but cases in the shell are more powerful and complex.1, strong mainly reflected in: Shell in case the keyword can be a string type, and each item can contain regular

Shell Scripts (1)a Shell script is a special application that receives the operation commands entered by the user and interprets them, passes the actions that need to be performed to the kernel execution, and outputs the execution results. You can

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

+++++++++++++++++++++++++ +++++shell Programming +++++++++++++++++++++++++++++++1. Basic Regular Expressionsregular expressions and wildcard characters:regular expressions are used to match conditional strings in a file, Regex contains matches, grep

1. View TCP connection StatusNetstat-nat |awk ' {print $6} ' |sort|uniq-c|sort-rnNetstat-n | awk '/^tcp/{++s[$NF]}; END {for (a in S) print A, s[a]} 'Netstat-n | awk '/^tcp/{++state[$NF]}; END {for (key in) print key, "T", State[key]} 'Netstat-n |

#!/bin/bashsource/etc/profile;################################################### Author:ouyangyewei # # # # Content:combineorder algorithm ############## ###################################### Change Workspace to

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

Basic usage of hbase Shell Hbase provides a shell terminal for user interaction. Run the hbase shell command to enter the command interface. Run the HELP command to view the help information of the command. The usage of hbase is demonstrated using

By default, bash shell is a non-typed footfall language. Unless specifically declared with declare, it does not distinguish whether a variable is an integer variable, a floating point variable, or a string variable. All variables in bash shell are

I wrote a shell script to maintain the test environment, used crontab Scheduling for scheduled execution, and encountered a garbled problem. The script runs directly in the shell environment without any questions.   The conclusion is that crontab

1. Event Description: 1 ,#! /Bin/bash Cat ../ip.txt | while read line Do Echo $ line SSH $ line "ls" Done The result is recycled once and then exited. The reason is that while uses the redirection mechanism. All the information in the file is read

Sort command Sort [Option] [input file] Option: -C: Check whether the file has been sorted. If not, output the first unsorted record. -K specifies the sorting domain -M merges two sorted files, and the merged files are also sorted, such as sort-M A1

[Shell Study Notes] the sort and uniq commands sort the text, single and repeat the document directory [hide] Sort command syntax Common options Common sort usage Uniq command Command Options Uniq usage Sort is a commonly

Shell: displays the basic system information script and shell basic information script. #! /Bin/bashecho "IP:" ifconfig | grep "inet addr" | grep-v 127.0.0.1 | awk '{print $2}' | awk-F ': ''{print $2} 'echo" Product Name: "dmidecode | grep Nameecho"

Common shell Command records in Linux and linuxshell commands Hardware CPU Problems Lscpu # view cpu statistics. cat/proc/cpuinfo # view CPU details, such as the Model and clock speed of each CPU. Memory-related Free-m # view the memory in