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Full Discussion: concatenate lines in pairs
Top Forums Shell Programming and Scripting concatenate lines in pairs Post 302430358 by kerl on Thursday 17th of June 2010 10:30:05 AM
Old 06-17-2010
concatenate lines in pairs

Hi,

I have a text file with the following contents

Code:
/C=IT/O=INFN/OU=Personal Certificate/L=Napoli/CN=Some guy
/C=IT/O=INFN/CN=INFN CA
/O=Grid/O=NorduGrid/OU=uninett.no/CN=Another guy
/O=Grid/O=NorduGrid/CN=NorduGrid Certification Authority
/C=TW/O=AP/OU=GRID/CN=Someone else
/C=TW/O=AS/CN=Academia Sinica Grid Computing Certification Authority Mercury

I need concatenate the lines of this file in pairs, thus it should become

Code:
/C=IT/O=INFN/OU=Personal Certificate/L=Napoli/CN=Some guy /C=IT/O=INFN/CN=INFN CA
/O=Grid/O=NorduGrid/OU=uninett.no/CN=Another guy  /O=Grid/O=NorduGrid/CN=NorduGrid Certification Authority
/C=TW/O=AP/OU=GRID/CN=Someone else  /C=TW/O=AS/CN=Academia Sinica Grid Computing Certification Authority  Mercury

Similar to the example in UNIX BASH scripting: Concatenate lines using awk in bash

How can I do that?

Thnx

Last edited by Scott; 06-17-2010 at 11:50 AM.. Reason: Please use code tags
 

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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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