Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

A block of code is set as follows:

<<EOF cat >greetlib.sh
greet_yourself () {
   echo Hello, \${1:-\$USER}!
}
EOF

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

<key>Ctrl+b</key> “
<key>Ctrl+b</key> <key></key>
<key>Ctrl+b</key> “

Any command-line input or output is written as follows:

sudo apt install -y screen tmux

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."