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Full Discussion: Remove newline in middle of string
Operating Systems Linux Remove newline in middle of string Post 302777419 by Yoda on Friday 8th of March 2013 12:36:53 AM
Old 03-08-2013
Explanation:
Code:
awk '
/^>/ {                                  # If current record starts with > ( /^</ )
        $0 = (NR > 1 ? RS $0 : $0)      # If current record number is greater 1 (NR > 1) set it to newline followed by current record (RS $0)
        ORS = RS                        # Set Output Record Separator to Record Separator (ORS = RS) [ RS is newline by default ]
}

! />/ {                                 # If current record does not contains pattern > ( !/>/ )
        ORS = ""                        # Set Output Record Separator to "" (ORS = "")
}

END {                                   # END Block
        printf "\n"                     # Print newline
} 1                                     # 1 == true, so print current record
' file

Note: ORS, RS, NR are special variables in awk. Please check the awk manual pages for further reference. I hope this helps.
 

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LEARN ABOUT OSX

mail::spf::v2::record5.16

Mail::SPF::v2::Record(3)				User Contributed Perl Documentation				  Mail::SPF::v2::Record(3)

NAME

       Mail::SPF::v2::Record - Sender ID ("spf2.0") record class

SYNOPSIS

       See Mail::SPF::Record.

DESCRIPTION

       An object of class Mail::SPF::v2::Record represents a Sender ID ("spf2.0") record.

   Constructors
       The following constructors are provided:

       new(%options): returns Mail::SPF::v2::Record
	   Creates a new Sender ID ("spf2.0") record object.

	   %options is a list of key/value pairs representing any of the following options:

	   text
	   terms
	   global_mods
	       See "new" in Mail::SPF::Record.

	   scopes
	       Required.  See "new" in Mail::SPF::Record.  The 'mfrom' and 'pra' scopes are supported.	There is no default.

       new_from_string($text, %options): returns Mail::SPF::v2::Record; throws Mail::SPF::ENothingToParse, Mail::SPF::EInvalidRecordVersion,
       Mail::SPF::ESyntaxError
	   Creates a new Sender ID ("spf2.0") record object by parsing the string and any options given.

   Class methods
       The following class methods are provided:

       version_tag_pattern: returns Regexp
	   Returns a regular expression that matches a version tag of 'spf2.0/' plus a comma-separated list of any of the 'mfrom' and 'pra'
	   scopes.  The following are valid version tags:

	       spf2.0/mfrom
	       spf2.0/pra
	       spf2.0/mfrom,pra
	       spf2.0/pra,mfrom

       default_qualifier
       results_by_qualifier
	   See "Class methods" in Mail::SPF::Record.

   Instance methods
       The following instance methods are provided:

       text
       scopes
       terms
       global_mods
       global_mod
       stringify
       eval
	   See "Instance methods" in Mail::SPF::Record.

       version_tag: returns string
	   Returns 'spf2.0/' plus a comma-separated list of the scopes of the record.  See "version_tag_pattern" for a list of possible return
	   values.

SEE ALSO

       Mail::SPF, Mail::SPF::Record, Mail::SPF::Term, Mail::SPF::Mech, Mail::SPF::Mod

       <http://tools.ietf.org/html/rfc4408>

       For availability, support, and license information, see the README file included with Mail::SPF.

AUTHORS

       Julian Mehnle <julian@mehnle.net>, Shevek <cpan@anarres.org>

perl v5.16.2							    2013-08-25						  Mail::SPF::v2::Record(3)
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