-=[ ED - Unix Style Line Editor ]=- The online editor is a clone of the Unix ed. This is a rehash of the original ed docs. Only creators have access to the online editor. Ed has two modes, command mode and insert mode. Command mode has the prompt ':', insert mode has no prompt. <Insert Mode Commands> Insert mode has only one command. By typing a single '.' at the beginning of the line you exit insert mode, and enter command mode. Otherwise, each line of text is added to the document. <Command Mode Command> All commands in command mode will accept the following format, <line1,line2>command - apply command from line1 to line2 <line1>command - apply command to line1 command - apply command to current line For example: :1,5d - delete from line 1 to line 5 :2d - delete line 2 :d - delete current line If any numbers are out of range the command will fail. <Commands> Commands that use a line range: p Print line. d Delete line. l Print line with control characters. r file Read in a file after the line specified. s Substitute patterns. See special documentation. z Print 10 lines. a Start insert mode after specified line. i Start insert mode before specified line. Commands used without line specification: q Quit. Won't work if file is changed. Q Quit and discard all changes if not saved. w Write the file out. w file Write the file out with name 'file'. e file Edit a file. !cmd Give a game command. = print line number h online ed help <ed line reference tokens> '.' - reference current line number. A '.' is the "current line". The current line is the last line referenced. If you want to print last line + 10 more: .,.+10p '$' - reference last line of file A '$' is last line of file. Thus '1,$p' will always print all of the file. <ed commands can use Regular Expressions> There are special characters that can be used in the pattern: . Match any character. x* Match any numbers of x (0 or more). [abc] Match 'a', 'b' or 'c'. [0-9] Match any digit 0 - 9. [a-z] Match any lowercase letter. \x Match 'x' where 'x' can be any character. <EXAMPLES> -=- Pattern Searching -=- </> Change the current line to the next occurance of the pattern. Pattern searching can use regular expressions. :/hello search for the pattern 'hello' after the current line. :/ repeat the last search pattern -=- Substitute Command -=- <s> First a simple example: :s/apa/bepa/ This will substitue the 'apa' in current line to 'bepa'. If an 'p' is appended, you will also immediately see the result. :1,$s/apa/bepa/ Same, but all lines in file. Only first occurence on every line. :s/ab.d/ABCD/ Substitute any string 'abXd' against 'ABCD' where X can be any character. (see regular expressions) Any character can used instead of '/': :s!apa!bepa!g The 'g' specifies that all occurences of apa on this line are changed to bepa. -=- Read a file into current document -=- <r> You must have valid read access to read the file. :r /room/church.c Read the file /room/church.c into the current document at the current line. :r church.c Read the file church.c from your default directory. -=- Write document to an alternative file -=- <w> You must have valid write access to write the file. :w church2.c Write the document to church2.c in you default directory. :w /room/church2.c Write the document to /room/church2.c -=- Deleting lines -=- <d> This will delete line(s) from the document. :d delete current line :2d delete line 2 :2,5d delete from line 2 to 5 -=- Exiting ed -=- <x,q,Q> There are 3 ways to exit the editor. :x exit and save all changes to the edited file :q exit only if no changes have been made :Q exit, DO NOT save changes