On Sun, Nov 05, 2006 at 10:08:12AM -0800, Steve Lamb wrote: > Andrew Sackville-West wrote: > > On Mon, Nov 06, 2006 at 01:10:08AM +1100, John O'Hagan wrote: > >> Or the whole thing could even be done with (I think!): > > >> #tr -d '\n' < IN | tr ' ' '\n' | grep -B1 Processor | grep -v 'Processor\|--' > > > nice. > > Except for one problem. Look at the OP's post and you'll see that the > word "Processor" is split by a new line. So at no point does that word appear > in its entirety. tr -d '\n' deletes the new lines try this andrew@basement:~$ cat | tr -d '\n' test<enter> ing<enter> <ctrl-d> testingandrew@basement:~$ so that part strips all the newlines. the next tr replaces all spaces with newlines so that each word is now on an individual line, then grep -B1 Processor returns the line before any occurence of Processor. not sure what the second grep does with that \-- in it, but I assume it is supposed to eliminate any "Processor" result when the input includes 'Processor Processor'. A
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