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Top Forums Shell Programming and Scripting Remove new line starting with a numeric value and append it to the previous line Post 303020028 by nms on Thursday 12th of July 2018 08:47:10 AM
Old 07-12-2018
Remove new line starting with a numeric value and append it to the previous line

Hi,

i have a file with multiple entries. After some tests with sed i managed to get the file output as follows:

Code:
lsn=X-LINK-IN0,apc=661:0,state=avail,avail/links=1/1,
00,2110597,2094790,0,81,529,75649011,56435363,
lsn=TM1ITP1-AM1ITP1-LS,apc=500:0,state=avail,avail/links=1/1,
00,1019687575,1327955853,1,322,583,2810019516,1981897836,
lsn=TM1ITP1-AM1ITP2-LS,apc=501:0,state=avail,avail/links=1/1,
00,536022841,1334912507,0,277,966,2588691785,2512216939,
lsn=TM1ITP1-TMNLSTP1,apc=12309:1,state=avail,avail/links=4/4,
00,28422611,35850253,0,185,216,216892933,38975423,
01,66892965,50298069,0,250,8807,2591394100,803622868,
02,27488395,38094791,0,249,252,170335784,66760929,
03,27762094,19995809,0,251,258,216422353,2019547890,
lsn=TM1ITP1-TMNLSTP2,apc=12547:1,state=avail,avail/links=4/4,
00,80966204,16449140,0,47,121,1928336154,2818020786,
01,332655,171104,0,50,30,25432178,25498178,
02,55281799,11176343,0,93,145,4243472214,1907308254,
03,54060754,28585708,0,363,301,4174500371,4240529245,
lsn=X-LINK-IN1,apc=4882:1,state=avail,avail/links=1/1,
00,40085787,31652380,0,73,755,271023232,3802680330,

What i'm trying to perfrom now is to be able to shift any line starting with a number (in this case they all start with 0) to be shifted on to the next line. or maybe more simpler, all lines which do not begin with "lsn=" are to be appened to the previous line
Example:

Code:
lsn=X-LINK-IN0,apc=661:0,state=avail,avail/links=1/1,00,2110597,2094790,0,81,529,75649011,56435363,
....
lsn=TM1ITP1-TMNLSTP2,apc=12547:1,state=avail,avail/links=4/4,00,80966204,16449140,0,47,121,1928336154,2818020786,01,332655,171104,0,50,30,25432178,25498178,02,55281799,11176343,0,93,145,4243472214,1907308254,03,54060754,28585708,0,363,301,4174500371,4240529245,

Is there a way with sed or tr?

---------- Post updated at 02:47 PM ---------- Previous update was at 02:30 PM ----------

ok it seems this does the trick!

Code:
awk 'BEGIN {accum_line = "";} /^lsn=/{if(length(accum_line)){print accum_line; accum_line = "";}} {accum_line = accum_line " " $0;} END {if(length(accum_line)){print accum_line; }}'

 

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fmt(1)							      General Commands Manual							    fmt(1)

NAME
fmt - format text SYNOPSIS
width] [file...] DESCRIPTION
The command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in the width option. The default width is 72. concatenates the arguments. If none are given, formats text from the standard input. Blank lines are preserved in the output, as is the spacing between words. does not fill lines beginning with a period for compatibility with Nor does it fill lines starting with Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used). can also be used as an in-line text filter for the command: reformats the text between the cursor location and the end of the paragraph. Options recognizes the following options: Crown margin mode. Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that of the second line. This is useful for tagged paragraphs. Split lines only. Do not join short lines to form longer ones. This prevents sample lines of code, and other such "formatted" text, from being unduly combined. Fill output lines to up to width columns. WARNINGS
The width option is acceptable for BSD compatibility, but it may go away in future releases. SEE ALSO
nroff(1), vi(1). fmt(1)
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