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[root@RHEL7 expect]# . ssh.exp bash: spawn: command not found... couldn't read file "{": no such file or directory bash: yes/no: No such file or directory Key point: first, let's talk about the root cause of the problem. 1. Make sure that expect's dependent tcl is installed 2. Make sure expect is installed Root cause of the problem: w ...

catalogue preface 1, Condition test 1.test command 2. Document test   3. Integer value comparison   4. String comparison 5. Logic test 2: if conditional statement 1. Single branch structure 2. Double branch structure   3. Multi branch structure   3, case multi branch structure summary preface There are many ...

reference resources [crazy God talking about Java] Docker's latest super detailed tutorial is easy to understand preface Take notes and review later Docker installation Basic composition of Docker Image: The Docker image is like a template, which can be used to create container services. The tomcat image - > Run - > tomacat01 con ...

Docker image operation practice 1. Download Image -- docker pull image name docker pull hello-world 2. View the image file docker images [root@localhost docker]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest feb5d9fea6a5 7 days ago 13.3kB 3. View image details ...

Article references: Installing firewall in Centos7 https://www.cnblogs.com/anxminise/p/9650104.html Firewalls (firewalld and iptables) https://blog.csdn.net/weixin_40658000/article/details/78708375 Operation commands of CentOS7 firewall https://www.cnblogs.com/leoxuan/p/8275343.html https://blog.csdn.net/wangleiqqaaaaa/article/details/1034086 ...

I. overview of YUM 1. Introduction to Yum warehouse Software update mechanism of YuMe... za ● software update mechanism based on RPM package ● dependencies can be resolved automatically ● all software packages are provided by the centralized YUM software warehouse yum is a software update mechanism based on RPM package (short for red hat ...

preface Nginx module is a great advantage of nginx compared with apache. The module can provide more functions for nginx to meet the daily needs of operation and maintenance. When there are some requirements, we just need to compile a new module and restart nginx. 1, Common nginx web modules 1. Random Homepage_ index_ module (1)mkd ...

After installing mplayer in linux environment, open QT in ubuntu. QT installed version 5.12.9. The icons on QT interface are basically pictures collected by punctual atoms. For the implementation method, refer to the teaching in station B Brief introduction to mplayer command: Key operation:      Volume reduction: /, 9 &nbsp ...

Linux text file reading describe Text viewing and reading of any operating system is the most basic function; There are mainly seven commands (cat/tac/nl/more/less/head/tail) involved in text reading in linux system cat command Command purpose Read all information from the fileLink and print the contents of multiple files to standa ...

Installation and usage of irace Since many of the functions of irace can only be implemented on GNU/Linux systems, it is recommended that you run this tuning tool on Linux, which is also described below for Linux. Note: The irace runtime requires the R language runtime environment. The R language runtime environment dependency may co ...