UNIX Text Processing by Dale Dougherty

UNIX Text Processing by Dale Dougherty

By Dale Dougherty

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Edits and Movement You have learned the edit commands c, d, and y, and how to combine them with movements and numbers (such as 2cw or 4dd). Since that point, you have added many more movement commands to your repertoire. Although the fact that you can combine edit commands with movement is not a “new” concept to you, Table 3-2 gives you a feel for the many editing options you now have. 2 Combining vi Commands From Cursor to Bottom of screen Next line Next sentence Next paragraph Pattern End of file Line number 13 Change cL c+ c) c} c/pattern cG c13G Delete dL d+ d) d} d/pattern dG d13G Copy yL y+ y) y} y/pattern yG y13G You can also combine numbers with any of the commands in Table 3-2 to multiply them.

You set values for these options with an equals sign (=). For example: :set window=20 During a vi session, you can check what options are available. The command: :set all displays the complete list of options, including options that you have set and defaults that vi has chosen. The display will look something like this: 42 Unix Text Processing noautoindent autoprint noautowrite nobeautify directory=/tmp noedcompatible noerrorbells hardtabs=8 noignorecase nolisp nolist magic mesg number nooptimize open tabstop=8 prompt taglength=0 noreadonly term=wy50 redraw noterse /remap timeout report=5 ttytype=wy50 scrolls=11 warn sections=AhBhChDh window=20 shell=/bin/csh wrapscan shiftwidth=8 wrapmargin=10 noshowmatch nowriteany noslowopen paragraphs=IPLPPPQP LIpp1pipbb tags=tags /usr/lib/tags You can also ask about the setting for any individual option by name, using the command: :set option?

You don’t have to memorize banks of function keys or stretch your fingers to reach awkward combinations of keys. , I is different from i); • are not echoed on the screen; • do not require a RETURN after the command. 22 Unix Text Processing There is also a special group of commands that echo on the bottom line of the screen. Bottom-line commands are indicated by special symbols. ) begin search commands, which are discussed in session 2. A colon (:) indicates an ex command. You are introduced to one ex command (to quit a file without saving edits) in this chapter, and the ex line editor is discussed in detail in Chapter 7.

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