Path: utzoo!attcan!uunet!seismo!esosun!cogen!alen From: alen@cogen.UUCP (Alen Shapiro) Newsgroups: comp.unix.questions Subject: a "trivial" sed question Summary: can sed join all lines? Message-ID: <512@cogen.UUCP> Date: 6 Jun 88 22:22:59 GMT Reply-To: alen@cogen.UUCP (Alen Shapiro) Organization: Cogensys, LaJolla, Calf. Lines: 41 I know the answer is 'use tr -d "\012"' but here is the question; Is there a way USING SED to remove allchars from a file. This is just an exercise since "tr" provides the functionality but it was part of a question that a student asked me and I was unable to give a satifactory answer. The effect I want to see can be emulated by 2 sed commands 1) 'N' - add next line to current pattern space 2) 's/\n//g' But I only get what I want if I repeat 'N' times on the first line of the script (where is the number of lines in the input file - not very satisfactory). The closest I got was to make a script that joins every second line!! : l N s/\n/ / t l I have managed to crash "sed -n" with a core dump with this effort... (sed{0,1}.c 1.1 86/07/07 SMI) : b N s/\n/ /g H t b g s/\n/ /g p which just goes to show how convoluted my reasoning became before giving up. I bet you guys and gals can think of a really easy solution. --alen the Lisa slayer (it's a long story) ...!{seismo,esosun,suntan}!cogen!alen