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Full Discussion: Insert New Line Character
Top Forums Shell Programming and Scripting Insert New Line Character Post 302880950 by unme on Wednesday 25th of December 2013 01:27:18 AM
Old 12-25-2013
Insert New Line Character
Hi,
If my first character of a line starts with 2 then after 5th charecter newline character should be inserted.

Input.txt:
Code:
a1234567890
2222300007
bsdfsdf888999999
ssdfkjskfdjskfdjd
2899900000000099999999999999
28887777
999999999999999999

Output.txt:
Code:
a1234567890
22223
00007
bsdfsdf888999999
ssdfkjskfdjskfdjd
28999
00000000099999999999999
28887
777
999999999999999999

I've tried the below but not getting desired output, could you please help me in this.
Thanks in advance

Code:
awk 'BEGIN{ FS=""; ch=5}
{
 z=substr($0,0,1) ;
if  (z== 2)
    print substr($0,1,ch) "\n" substr($0,ch)
}' Input.txt>Output.txt

Regards,
Ulf

---------- Post updated at 11:57 AM ---------- Previous update was at 11:23 AM ----------

I got the output...... Its working perfectly
Code:
awk 'BEGIN{ FS=""; ch=5}
{
    if (substr($0,0,1) == 2)
    print substr($0,1,ch) "\n" substr($0,ch)
    else
    print $0
}' Input.txt>Output.txt

 

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LEARN ABOUT CENTOS

perl::critic::policy::builtinfunctions::prohibitlvaluesubstr

Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSuUser(Contributed Perl DocumPerl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr - Use 4-argument "substr" instead of writing "substr($foo, 2, 6) = $bar".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Conway discourages the use of "substr()" as an lvalue, instead recommending that the 4-argument version of "substr()" be used instead.

	   substr($something, 1, 2) = $newvalue;     # not ok
	   substr($something, 1, 2, $newvalue);      # ok

       The four-argument form of "substr()" was introduced in Perl 5.005.  This policy does not report violations on code which explicitly
       specifies an earlier version of Perl (e.g. "use 5.004;").

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       "substr" in perlfunc (or "perldoc -f substr").

       "4th argument to substr" in perl5005delta

AUTHOR

       Graham TerMarsch <graham@howlingfrog.com>

COPYRIGHT

       Copyright (c) 2005-2011 Graham TerMarsch.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.3							    2014-06-09	   Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3)
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