Blog Outline:1. Regular expressions(1) Definition of regular expressions(2) Use of regular expressions1. Basic Regular Expressions(1) grep command tool2. Extending regular expressions2. Text Editing Processor1.grep Command Tool2.sed Command Tool3.awk Command Tool
1. Regular expressions
(1) Definition of regular expressions
Regular expressio ...
Posted on Sat, 09 Nov 2019 12:39:54 -0500 by Labbat
Recently learning to write documents with MarkDown, I hate passing pictures.Prepare to build your own wheel with PowerShell, but also search ahead and find a lot of Big Brother's documents.
The whole process to do is
Copy Clipboard Picture with Mouse
Enter program processing logic
Processing clipboard pictures, saving cost local file ...
Posted on Thu, 07 Nov 2019 16:45:36 -0500 by titel
Installation system environment
CentOS 6.8 64 bit
7u80 64 bits
Apache Maven 3.6.0
git version 2.18.0
[root@192 yum.r ...
Posted on Sun, 03 Nov 2019 09:18:28 -0500 by T Horton
The topology of this experiment is as follows:
Complete the establishment of extended ACL on R1 route, and achieve the experimental requirements:
Allow PC1 to access Linux web services;
Allow PC2 to access the ftp service of Linux;
PC1 and PC2 are forbidden to access other Linux services;
Allow PC1 to connect PC2
Experimental st ...
Posted on Tue, 15 Oct 2019 12:55:53 -0400 by nike121
Practice environment deployment
Server: A Linux Virtual Machine (CentOS 7)Client: Two Windows 10 Virtual Machines (win10-1 win0-2)
Topological Structure Diagram
Step 1: Install the service using the Linux server to verify the ACL effect
1. Networking Status Installation Service
yum install httpd -y //Installing web Se ...
Posted on Mon, 14 Oct 2019 04:11:39 -0400 by sufian
There are many kinds of text processors or text editors in Linux/UNIX systems, including VIM editors and grep, which we have learned before. And grep, sed, awk are often used in shell programming text processing tools, known as shell programming three swordsmen.
Stream EDitor (Stream EDitor) is a powerful and simple te ...
Posted on Sat, 12 Oct 2019 00:12:15 -0400 by cableuser
Two of the Three Swordsmen sed Tools
Stream EDitor (Stream EDitor) is a powerful and simple text parsing and transformation tool, which can read text, edit the text content (delete, replace, add, move, etc.) according to specified conditions, and finally output all lines or only some processed lines. sed can also implement quite complex text ...
Posted on Fri, 11 Oct 2019 15:28:08 -0400 by firstname.lastname@example.org
The Concept of Regular Expressions
Regular expression: Use a single string to describe and match a series of strings that conform to a certain syntactic ruleIt is composed of ordinary characters and special characters. It is commonly used in script programming and text editor, such as php, python, she, etc. It is abbreviated as regex, regexp, ...
Posted on Fri, 11 Oct 2019 04:19:31 -0400 by priya_cks
sed is a powerful and simple text parsing and transformation tool, which can read text, edit text content (delete, replace, add, move, etc.) according to specified conditions, and finally output all lines or only some processed lines. sed can also implement quite complex text processing operations without interaction, and is widely u ...
Posted on Thu, 10 Oct 2019 09:12:06 -0400 by Jona
[root@localhost ~] yum -y install vsftpd #Install vsftpd
[root@localhost ~] yum -y install ftp #Install ftp
[root@localhost ~] vsftpd -v #View version number
II: Start-up Services
[root@localhost ~]# systemctl start vsftpd.service #Start ftp service
Posted on Thu, 03 Oct 2019 00:37:48 -0400 by nielsg