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#print Often you want to refer to the last line of the file. You don't have to know the number of lines in the file to do that; there is a special address, "$", that always refers to the last line.

#print You must always remember what the computer is expecting from you: shell commands, editor commands, or input text after an 'append'. Suppose you are typing append text: what do you type to ge

#print Perhaps the most powerful command in the editor is the 'g' (global) command. This always precedes a second command on the same command line; it selects those file lines on which the second c

#print The file "memo" contains several paragraphs, where a paragraph starts at any line that begins with a blank. It is desired to remove those blanks at the beginning of lines, and instead mark the

#print Another command similar to 'm' is 't'; the command 5,8t15 picks up lines 5 through 8 and makes a copy of them, which it places after line 15. It differs from 'm' only in that the lines remai

#print Changing a whole line with the 'c' command is a slow way to work when you only want to change a few letters. The 's' (substitute) command changes the letters within a line. For example, the c

#print As an easier typing test, see if you can just get the word "management" in correctly. Type it in response to '%' and then type "ready". #copyin #user #uncopyin #match management #log #next 3.1

#print You may well ask how the editor knows which line to print. The editor keeps track of the 'current line', which is usually the last line you touched in any way. When you begin editing a file, fo

#print Printing only one line at a time gets pretty slow. You can print several lines with commands like 1,3p which prints lines 1, 2 and 3. Again, I'll put you into the editor with the familiar fi

#print Sometimes it is desirable to specify that the characters to be changed are at the beginning of the line. This uses the '^' character. For example, s/^ab/xy/p will change "ab" to "xy" ONLY i