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    <p>A solution using 'perl'. I suppose first column is 8 characters width.</p> <p>Program:</p> <pre><code>use strict; use warnings; ## Hash with contents of each line. Example: ## $file{ 1 } = "... line 1 ..." ## $file{ 2 } = "... line 2 ..." ## ... my %file; ## Max. number of characters of each column. ## $col_length[0] will have the max. number of characters of all string of ## first column, and the same for the others. my @col_length; while ( &lt;&gt; ) { next if /^\s*$/; chomp; ## Save fixed columns in array. ## A8 -&gt; 8 characters of first columns. ## A11 -&gt; 11 characters of second column. ## ... my @line = unpack( "A8A11A7A7", $_ ); ## Remove leading and trailing spaces of each field. @line = map { s/^\s*//; s/\s*$//; $_ } @line; ## Save max. number of characters of each column. for ( 0 .. $#line ) { my $l = length $line[$_]; $col_length[$_] = $l &gt; ($col_length[$_] || 0) ? $l : $col_length[$_]; } ## Save each input line. push @{ $file{ $. } }, @line; } ## Print to output. for ( sort { $a &lt;=&gt; $b } keys %file ) { my $format = join "", (map { "%" . $_ . "s" } @col_length), "\n"; printf $format, @{$file{ $_ }}; } </code></pre> <p>Input file (infile):</p> <pre><code> USA France 212 13 Canada Spain 34 23 Me ico Italy 4 390 india Portugal 5900 32 Malaysia Holland 15 43 </code></pre> <p>Execution:</p> <pre><code>$ perl script.pl infile </code></pre> <p>Output:</p> <pre><code> USA France 212 13 Canada Spain 34 23 Me ico Italy 4390 indiaPortugal5900 32 Malaysia Holland 15 43 </code></pre>
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    1. POHow to remove a number of spaces between columns and put a custom number of spaces inside?
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