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Top Forums Shell Programming and Scripting Edit first line of a text file Post 302693579 by zaxxon on Wednesday 29th of August 2012 11:13:25 AM
Old 08-29-2012
Why awk? What have you tried so far?

You always have to open a file, wether for reading, writing or both, afaik. Maybe you mean something else instead of "open".

Issue 2:
Write the line to a file and add the long file to the one-liner file by shell's redirection/concatenation.
 

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PerlIO::via::QuotedPrint(3pm)				 Perl Programmers Reference Guide			     PerlIO::via::QuotedPrint(3pm)

NAME
PerlIO::via::QuotedPrint - PerlIO layer for quoted-printable strings SYNOPSIS
use PerlIO::via::QuotedPrint; open( my $in, '<:via(QuotedPrint)', 'file.qp' ) or die "Can't open file.qp for reading: $! "; open( my $out, '>:via(QuotedPrint)', 'file.qp' ) or die "Can't open file.qp for writing: $! "; VERSION
This documentation describes version 0.07. DESCRIPTION
This module implements a PerlIO layer that works on files encoded in the quoted-printable format. It will decode from quoted-printable while reading from a handle, and it will encode as quoted-printable while writing to a handle. REQUIRED MODULES
MIME::QuotedPrint (any) SEE ALSO
PerlIO::via, MIME::QuotedPrint, PerlIO::via::Base64, PerlIO::via::MD5, PerlIO::via::StripHTML, PerlIO::via::Rotate. ACKNOWLEDGEMENTS
Based on example that was initially added to MIME::QuotedPrint.pm for the 5.8.0 distribution of Perl. COPYRIGHT
Copyright (c) 2002, 2003, 2004, 2012 Elizabeth Mattijsen. All rights reserved. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2013-11-04 PerlIO::via::QuotedPrint(3pm)
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