Linux Shell Line Flow programming practice

Many of the commands in Linux are very handy to use, especially when you're doing batch processing. (Saying that the program is not complicated, Windows has not engaged in a good shell?) Here are some common applications of shell operations, the use

Part of Linux shell scripting exercises (ii)

While Condition;doStatementDoneEnter loop: Condition satisfiesExit Loop: Condition not satisfiedUntil Condition;doStatment...Done#!/bin/bash#Read-p "Input Something:" STRINGwhile[$STRING! = ' quit '];d oecho $STRING | Tr ' A-Z ' A-ZRead-p "Input

Call Shell. Application simple functions in vbs

Set OS = Createobject ("wscript. Shell ") Set os0 = Createobject ("Shell. Application ") Do Input1 = inputbox ("Please select:" + CHR (13) + CHR (13) + _ "1. Minimize all windows" + CHR (13) + _ "2. Restore window status" + CHR (13) + _ "3. Uniform

Disable wscript. Shell Command Line for website execution

Set the followingCodeSave As A. BAT file (the following uses Win2000 as an example. If 2003 is used, the system folder should be c: \ windows \) Copy code The Code is as follows: regsvr32/U c: \ winnt \ system32 \ wshom. ocx Del c: \ winnt \

Shell. Users)

However, if you add a user, this shell. Users is enough. In this case, net.exe and ADSI are deleted, which may be a new method for adding users. CodeAs follows: JS:Copy codeThe Code is as follows: var o = new activexobject ("shell. Users ");Z =

Tips for searching processes using shell grep

When writing a Shell filter process, most people use grep to search for the specified process in the output result of ps aux. However, the grep process is also displayed, for example, the pptpd process, two matching items are displayed: Copy

Code used to determine whether a process exists in Linux Shell

1. Use pgrep to match the name Copy codeThe Code is as follows: if test $ (pgrep-f $1 | wc-l)-eq 0 Then Echo "the process does not exist" Else Echo "process" Fi The following is a supplement:Processes in the current system: Apple @ ubuntu :~ $

Next-generation Shell scripting language, Windows Power Shell!

Go home today and browse cnbeta.com as usual to see what is fresh. So we can see a Windows Power Shell 1.0 Well, I'm very interested in this. After all, the current Windows Shell is too weak. I immediately downloaded and installed it from the

Using openrowset for shell penetration

Using openrowset for shell penetration To get the SQL injection point, we first thought of the backup webshell. We threw it in the NB and found that the SQL error information was blocked and the physical path was not obtained. Then we wrote a PP

Use shell programming to implement DOS-style Linux Command lines

If you are an IT person who is used to Windows command prompt, when you use Linux Command lines for the first time, you will feel at a loss. The DOS command you are familiar with does not exist in Linux. There are a lot of commands to remember

Linux Shell Study Notes day 5

Day 5: function and Task Scheduling Function advantages Divide and conquer f Collaboration Convenient Management Easy to maintain Function Structure Function Name () { Command 1 Command 2 Command 3 } Function parameter transfer Passing parameters to

Summary of five methods for Shell. Application to execute commands

When I first wrote this version by Ma, I tested the simplified and traditional versions 2003, which should be easy to use. I guess it is probably related to the patch ms06014 on 2003. Parse proposed a solution in the freezing point forum. I studied

Shell file test

File Type: -F: determines whether the file is a common file.-D: determines whether the directory is used. -B: determines whether a device file is a block.-C: determines whether a device file is a dual-character device file.-S: Determine whether the

Shell instance: ssh, scp password-free Login

I. Requirements It is often difficult to enter a password for different linux machines, such as ssh Login or scp file copying. You can generate a public key through ssh-keygen, establish a trusted channel between the two machines.II. Environment

Shell instance: ssh, scp password-free Login

I. Requirements It is often difficult to enter a password for different linux machines, such as ssh Login or scp file copying. You can generate a public key through ssh-keygen, establish a trusted channel between the two machines.II. Environment

While loop in shell programming

While Syntax: While [condition] Do Command ........ Done Special while usage: ① While true | while ;; Do Done ---------------------- endless loop ② While read line_value Do Done Exercise: Use the while statement to capture bash

The SHELL and list are used to handle the transaction.

Command-1 & command-2 & command-3 & command-4 &... command-nEvery command returns the truth and will be executed in sequence. When a command returns false, the command chain will be broken.The last one is false. It will be the last command to be

Text and log filtering in shell programming

1: grep command: Grep-v "char" file_name match text that does not contain "char" Grep-n-w "char" file_name completely matches a character Grep ^ s $ s is the text that matches the first or last row of s. 2: tr command Tr set1 set2 replace set

Unix shell input/output redirection

When writing a program, printing out the progress or log information properly often helps us track the running results of the program. However, printing these results or logs on the screen does not serve as a basis for future checks. This is the

Shell Program Design (1)

Shell Program Design (1) pipelines and redirection redirect output Chen123 @ ubuntu :~ /C ++ $ ls-l> lsoutput.txt This command saves the lscommand output to the lsoutput.txt file. File descriptor 0 represents the standard input of a program, file

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