English Persian
.... % date +"The time is %H:%M" The time is 09:18 .... |Manual page references. |Use man:su[1] to change user identity. |User and group names. |Only `root` can do this. |Emphasis. |The user _must_ do this. |Text that the user is expected to replace with the actual text. |To search for a keyword in the manual pages, type `man -k _keyword_` |Environment variables. |`$HOME` is set to the user's home directory.
.... You have mail. .... |What the user types, contrasted with on-screen computer output. a|
A Sample Example
Examples are represented like this, and typically contain examples showing a walkthrough, or the results of a particular action.
Important information is represented like this. Typically, these show extra steps the user may need to take.
My thanks to Sue Blake, Patrick Durusau, Jon Hamilton, Peter Flynn, and Christopher Maden, who took the time to read early drafts of this document and offer many valuable comments and criticisms.
Notes are represented like this, and contain information to take note of, as it may affect what the user does.
Notes, Tips, Important Information, Warnings, and Examples
Notes, warnings, and examples appear within the text.
Shell Prompts
This table describes the typographic conventions used in this book.
This table shows the default system prompt and superuser prompt. The examples use these prompts to indicate which type of user is running the example.
Tips are represented like this, and contain information helpful to the user, such as showing an easier way to do something.
Warnings are represented like this, and contain information warning about possible damage if the instructions are not followed. This damage may be physical, to the hardware or the user, or it may be non-physical, such as the inadvertent deletion of important files.
| Meaning
| Examples

|The names of commands.
|Use `ls -l` to list all files.

|The names of files.
|Edit [.filename]#.login#.

|On-screen computer output.

| User
| Prompt

|Normal user