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#print Another thing about the 'w' command is that if you just want to write a file and quit, you can put the w q on the same line, as in wq Make a copy of the file 'harry' in a file named 'norman

#print There is also a special character which indicates the end of the line. It is '$'. So that s/ab$/xy/ changes 'ab' to 'xy' only if 'ab' ended the line. In the file 'text' there are some lines

#print When you want to match one of a few specific characters, and not just any character, the pattern is similar to the pattern used in filenames. The patterns used with the editor, by the way, are

#print Here's a last review exercise. In the file "cities" is a list of cities with populations and Zip codes. The following cities were omitted: add them in alphabetical order St. Louis 622,236

#print You can print several lines at once by using commands like 1,3p which prints lines 1, 2 and 3. Again, I'll put you into the editor. Print lines 1 to 3 of the file; then type w, q and ready

#print The 'nu' command works the same way as 'p', except that it puts the line number to the left of each line that it prints. I will put you in the editor with the file 'henry'. Type 1,$nu and t

#next 1.1a 10

#print Just as you can specify files with an abbreviation, it is also possible, in the 's' command, to use an abbreviation for the string to be used for substitution. Unfortunately, the characters us

#print Back early in this sequence we made clear that the shell (the normal command interpreter) and the editor were distinct and they didn't pay any attention to each other's commands. Sometimes you

#print For symmetry, you can use + instead of either ".+1p" or an empty line (just a newline). The only advantage that + has is that you can repeat it: ++ prints the second following line, and +