Docker is an opensource tool used for virtualization and deliver software in the form of packages called Containers. It is one of the most important tools used in networking domain. Dockerfile is a template for building the image which contains commands needed to package the software. In this post, I am going to explain the commands ADD & COPY used in Dockerfile . ADD Command: ADD command is used to copy files, directories or files from remote URLS to destination path in the image. The source paths can contain wildcards. If the destination has relative path, it is relative to the Working directory of the image. Note that source path is always relative to the Docker build context. ADD command will not support authentication. So, if there are any protected files to be added in Dockerfile building, use other tools like curl or wget Dockerfile copying Single & Multiple files, directory using ADD inst...
In this post, I am going to teach you on how to validate the IPV4 address which is from “ Practical Network Automation book” . There are two ways Building own logic Using the Library Building own Logic: First, let us see the validation of the IPV4 address using own logic. Generally, we know that IPV4 has four octets separated by dots. That means the IPV4 address has 3 dots and four octets separated by these dots and they are in the range of 0-255. So, we have to validate these two conditions in order to validate IPV4 address. Below is the script for this functionality. def ip_validate ( ip_address ): #Check for the presence of four octets if( ip_addr.count (".") != 3): return False octets = ip_addr.split (".") #Check the range of each octet in the given input ...