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Top Forums Shell Programming and Scripting awk or sed - Convert 2 lines to 1 line Post 302631741 by drl on Friday 27th of April 2012 08:44:10 PM
Old 04-27-2012
Hi.

An alternate with sed , cut , paste:
Code:
#!/usr/bin/env bash

# @(#) s1	Demonstrate combine lines fro specific column (field).

pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C sed cut paste

FILE=${1-data1}
pl " Input data file $FILE:"
cat -A $FILE

pl " Results of sed, cut, paste:"
sed 's/   */\t/g' $FILE |
cut -f2 |
paste - -

pl " Same thing, compressed with \"Process Substitution\":"
cut -f2 <( sed 's/   */\t/g' $FILE ) |
paste - -

exit 0

producing:
Code:
% ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
sed GNU sed version 4.1.5
cut (GNU coreutils) 6.10
paste (GNU coreutils) 6.10

-----
 Input data file data1:
Policy Name:       Policy1$
Active:            yes$
Policy Name:       Policy2$
Active:            yes$
Policy Name:       Policy3$
Active:            no$
Policy Name:       Policy4$
Active:            yes$
Policy Name:       Policy5$
Active:            no$

-----
 Results of sed, cut, paste:
Policy1	yes
Policy2	yes
Policy3	no
Policy4	yes
Policy5	no

-----
 Same thing, compressed with "Process Substitution":
Policy1	yes
Policy2	yes
Policy3	no
Policy4	yes
Policy5	no

The sed converts 3 or more blanks to TABs, the cut extracts column (field) 2, and the paste combines 2 lines into one.

If the whitespace in the results does not show up on your display, rest assured that the tokens are separated by a TAB. You can copy and paste them to see it.

See man pages for details.

Best wishes ... cheers, drl

( edit 1: correct minor spelling errors )

Last edited by drl; 04-28-2012 at 12:25 PM..
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HOZ(1)								   User Commands							    HOZ(1)

NAME
hoz - file splitter that uses the hacha file format SYNOPSIS
hoz [-pvf] [-c size[K|M]] [-o outpath] inputfname ghoz DESCRIPTION
HOZ is a file splitter, which uses the same file format as the popular 'Hacha' program. OPTIONS
-c --cut cut (file->pieces) -p --paste paste (pieces->file) -v --verbose verbose output -f --force force overwrite of file when pasting -o --outpath specify an output directory -h --help print this help, then exit --version print hoz program version number, then exit USAGE
There are two basic operations: cut and paste. Cut will 'split' a file in pieces. The size of each piece is passed as an option. Each piece will have a numeric extension, starting with 0. So for instance if you 'cut' a file called 'foo.iso', the pieces will be named 'foo.iso.0', 'foo.iso.1' and so on. Paste will 'merge' these pieces and generate and exact copy of the original file. ghoz is the graphical version of hoz, which uses a GTK GUI interface. SEE ALSO
You can find more information at http://hoz.sourceforge.net/ hoz 1.65 August 2008 HOZ(1)
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