Do you want to know how often words occur in a pdf file? And sort them by the most occurring word:

Let’s break it down step by step:

displays the pdf content on the command-line

 

replaces all control characters (cntrl), all numbers (digits) and all punctuation characters (punct) with an empty string.
See here for character classes.

replaces all spaces with a newline

 

The last part sorts the output, groups unique lines and prefix them with the amount and finally sort them again
with ignored leading blanks (-b), sort numeric (-n), in reverse order (-r)

Veröffentlicht unter pdf.

Let’s have a look which packages are already installed and show only those with „php“ in the name. A fresh system usually shouldn’t give any results.

Next you can check what kind of modules are available. Do it like this:

Now install the php7 base packages with the command:

Now install some other packages for php: