on Mon, Apr 09, 2001 at 02:06:50AM +0800, csj (csj@mindgate.net) wrote: > On Sunday 08 April 2001 08:48, Karsten M. Self wrote: > > on Sun, Apr 08, 2001 at 07:38:11AM +0800, csj (csj@mindgate.net) > wrote: > > > Taking a breath of humid air: > > > > > > Let's say I have a file "commands.list" which contains a series > > > of commands. One is the line: > > > > > > (1) find * -name *.htm | grep -h "http://www.foo.org"; > foo.txt > > > > > > I want now to do: > > > > > > (2) find * -name *.htm | grep -h "http://www.foobare.org"; > > > > foo.txt > > > > > > I would extract the first command (1) from "commands.list" by > > > typing > > > > > > grep "www.foo.org" > > > > > > which would of course print to the default stdout, e.g. the > > > terminal. End of story. That's all I get. But if there's some way > > > to "pipe" or "paste" (note the quotes of doubt) the output of > > > grep and friends to the command line itself, I can simply use > > > bash's line-editing functions to morph command (1) to command > > > (2). No mousing around (admittedly not much of a gray-xercise > > > when you're using gpm or X), no retyping, no vi. > > > > Command Substitution: > > > > $ cat <<EOF >cmd.lst > > df > > ls > > uptime > > EOF > > > > $ $( grep df cmd.lst ) > > > > QED. > > Not quite QED (tho quite close). What I'm looking for is how to edit > and execute an EXISTING cmd.lst. Sorry if I'm missing something > perfectly obvious. Hope this is the penultimate strand on this thread. Which gets us back to what I believe was the first suggestion I made. You can recall commands from your history with <ctrl>-R (if emacs-mode line editing is enabled) or other history manipulation commands. You can edit same on the command line using emacs or vi command-line editing keys. You can pull the whole schmeer into an editing session from vi mode with <esc>-v. There is the 'fc' "fix-command" shell built-in in bash which allows you to specify a command to command you want to modify. man bash for more info. There is a slew of command-history modification functions, most of which are like my exes: well known once but largely forgotten. Jerry Peek has a really neat shell tutorial online, see http://www.jpeek.com/talks/svlug_19991103/index.html I still don't understand why these don't fit your needs. A close reading of the bash man page is very strongly recommended. -- Karsten M. Self <kmself@ix.netcom.com> http://kmself.home.netcom.com/ What part of "Gestalt" don't you understand? There is no K5 cabal http://gestalt-system.sourceforge.net/ http://www.kuro5hin.org
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