Shell

Using expect to implement automatic interaction of shell scripts It is very effective for complex interactions and even different processing with different screen output. And the General Linux, Unix have. It's very easy to use and powerful. Spawn

There are control structures in all programming languages, and shell programming is no exception. The IF structure is the most commonly used branch control structure. The most common if statements in Linux Shell programming are: If.....then...fi,if..

Reference: First, the user log into the system after the system environment variables: $HOME user's own directory $PATH directory to search for when executing commands $TZ Time Zone $MAILCHECK every few seconds to check for new letters $PS 1 The

Use/dev/null 2>&1 to do this. This command means that the standard output and error output are all redirected to/dev/null, that is, all the information that is generated is discarded. Here's a look at the difference between command > File 2>file and

EXP detects if there is a SQL injection vulnerability[Email protected]:~# python zabbix.py http://ip:9090/+------------------------------------------------------------+Python zabbixSuccess+------------------------------------------------------------+

1. Signal ProcessingLinux uses signals to communicate with processes running in the system.Signal Value Description1 SIGHUP Suspend process2 SIGINT Terminate Process3 Sigquit Stop Process9 SIGKILL Unconditional Termination processSIGTERM terminate

Logical judgments in shell scriptsFormat 1:if condition; Then statement; FiIf a>3, output OK#!/bin/basha=5if [ $a -gt 3 ]then echo okfiFormat 2:if condition; Then statement; else statement; FiIf the a>8 output is OK, the output

1. What is the problem requirement?First, the need to come from, mainly to write shell script, with cat for multi-line input redirection, the Terminator must be hyphenation first, the format is not good-looking.2, how? How to solve this

Method 1: Pass the parameter#!/bin/bash############################################################### File Name:compare1.sh# version:v7.4# Author:feng Yu# organization:http://blog.51cto.com/13520761# Created Time:2018-03-26 17:22:20# Description:###

Use of related software:#########################################################################The above is the use of related software! The following is a non-secret landing of the preparationBetween the two servers, the configuration of the

Series article starter platform for Jelly want personal blog. Jelly think, is an original technical article sharing site. Here jelly will share his technical experience, technical gains and losses, technical life. I want to wait for you in jelly,

25, Shell special symbol Cut command, sort_wc_uniq command, tee_tr_split command, Shell special symbol underFirst, shell special symbol Cut commandSpecial symbols*: Wildcard.?: any one character.#: Comment characters, add to command before command

I. Shell environment and features 1.1 what is a shellInterpreter: Responsible for translating and communicating user/program instructions to the kernelInterpreter carShell carBash BMW, Mercedes, Ferrari1.1.1/etc/shellsThe content inside the file is

Purpose: Detects whether the service is running every minute of the day, and if it is running, the name of the process being executed; if it is not running, the current time is loggedShell#!/bin/bashdate=`date

1. Components of Linux1) Linux kernel (kernel)2) GNU tool chain3) GUI/CLI work on several sides (shell)4) application (APP)The main work of the 2Linux kernel:1) Managing Memory2) Management process3) Managing hardware devices4) Managing the file

When you configure the Automatic Updates deployment project in Jenkins, you can turn tomcat off if you take the Execute shell to start/close Tomcat,However, Tomcat could not be started, although the build would show that the execution was successful,

##################################################################################################Shell script:Scripts: Files that can be executed, implemented after running a certain function (command stacking, interactive)Standardize the general

Error in console when executing. SH script: #!/bin/bash:no such file or directoryWorkaround:Cat-a file pathYou'll find the first line is a problem.M-oM-;M-?#!/bin/bash$#----------------------------------$#$# M-eM-^PM-/M-eM-^JM-(M-hM-^DM-^ZM-fM-^\M-,

Shell echo display in script with color display , echo display with color, need to use parameter- e The format is as follows: echo-e "\033[ word background color; text color m string \033[0m" 　　For example:echo-e "\033[41;36msomething here \033[0m"　　

Origin: In the old boy Linux training shell programming teaching, found a lot of good level of friends and classmates are still very confused, the following for everyone to share the use of the array of small examples, I hope to give you a little