Regular expressions (regex) are extremely useful in extracting information from any text by searching for one or more matches of a specific search pattern. The basic anchors - ^ and $ expression action ^The matches any string that starts with The end$ matches a string that ends with end ^The end$ exact string match (starts and ends with The end) pragmatic matches any string that has the text pragmatic in it   The basic quantifiers — * + ? and...

To create a .pem file, is quick once you have your .p12 certificate.  I won't go through the process regarding p12 file generation as there are many sites that outline these steps.  If you cannot find a site that outlines this make a comment below and I'll point in the right direction. Open the terminal and go to the path where you save the apns-cert.p12. where and follow the below command to generate the .PEM file. The command below depends on the following two elements: Name of the...