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Full Discussion: Convert text to columns
Top Forums UNIX for Beginners Questions & Answers Convert text to columns Post 303024758 by BotHead on Tuesday 16th of October 2018 10:40:01 AM
Old 10-16-2018
Convert text to columns

Hi.
I need an input file of a single word pr. line converted in into a list of random pairs.

i need input like this
Code:
word1
word2
word3
word4

to be outputted like this:
Code:
word3 word1
word2 word4

My attempt is a tedious while loop like this:

Code:
nfiles=$(cat inputfile | wc -l)       #'wc -l inputfile' outputs name of file. this is unwanted. 
while [[ $nfiles -gt 0 ]]; do
    field1=$(shuf -n 1 inputfile)
    sed -i /$field1/d inputfile
    field2=$(shuf -n 1 inputfile)
    sed -i /$field2/d inputfile 
    echo "$field1 $field2" >> outputfile 
    nfiles=$(cat inputfile | wc -l)
done

Any help much appreciated. Thanks

Last edited by BotHead; 10-16-2018 at 11:53 AM..
 

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ICONV(1)						     Linux Programmer's Manual							  ICONV(1)

NAME
iconv - character set conversion SYNOPSIS
iconv [-c] [-s] [-f encoding] [-t encoding] [inputfile ...] iconv -l DESCRIPTION
The iconv program converts text from one encoding to another encoding. More precisely, it converts from the encoding given for the -f option to the encoding given for the -t option. Either of these encodings defaults to the encoding of the current locale. All the input- files are read and converted in turn; if no inputfile is given, the standard input is used. The converted text is printed to standard out- put. When option -c is given, characters that cannot be converted are silently discarded, instead of leading to a conversion error. When option -s is given, error messages about invalid or unconvertible characters are omitted, but the actual converted text is unaffected. The encodings permitted are system dependent. For the libiconv implementation, they are listed in the iconv_open(3) manual page. The iconv -l command lists the names of the supported encodings, in a system dependent format. For the libiconv implementation, the names are printed in upper case, separated by whitespace, and alias names of an encoding are listed on the same line as the encoding itself. SEE ALSO
iconv_open(3) GNU
January 13, 2002 ICONV(1)
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