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ROOT ‹ FreeBSD, Linux and AIX ‹ Shell Scripting and Programming ‹ How to replace new line in perl script

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How to replace new line in perl script

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mandrei99

Post subject: How to replace new line in perl script | Posted: Wed Jun 26, 2013 8:03 am

Joined: Tue Aug 04, 2009 9:16 am
Posts: 250

How to replace new line in perl script

In previous article, I showed how to use Linux shell to echo new line. I'm going to use that example for this post.

Echoing multiple new lines:

Code:

# echo -e "text\n\n\n"
text

#

Let's say we send this output to a perl script via pipe:

Code:

# echo -e "text\n\n\n" | perl /tmp/perl-new-line.pl   
text#
# cat /tmp/perl-new-line.pl 
#!/usr/bin/perl
while(<>){
  $_ =~ s/\n//;
  print "$_";
}

The script takes the input and parses every line with new line characters at the end of it. Then for each line, it removes the new line and echoes the result.

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admin

Post subject: Re: How to replace new line in perl script | Posted: Wed Jun 26, 2013 8:18 am

Site Admin

Joined: Mon Aug 03, 2009 8:43 am
Posts: 104

Or directly via shell command line.

Code:

# echo -e "asfd\n\n\n" | perl -pe 's/\n\r?/,/'   
asfd,,,,# 

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2 posts • Page 1 of 1

Topics		Author	Replies	Views	Last post
Topics related to - "How to replace new line in perl script"
	Removing new line / EoL characters in a PERL script	mandrei99	0	4405	Mon Nov 04, 2013 6:47 am mandrei99
	PERL: How to replace non-ascii characters/bytes in a file	admin	0	3372	Fri Apr 10, 2015 8:58 am admin
	Juniper SRX - Perl script - SNMP based RRDtool graphis from CPU usage and Flow Session (current)	mandrei99	1	5960	Mon Nov 04, 2013 11:47 am mandrei99
	How to replace \w SED multiple matches on the same line without piping	mandrei99	0	3448	Tue Oct 08, 2013 6:29 am mandrei99
	Echo new line in linux - supress new line or echo multiple new lines	mandrei99	0	6020	Wed Jan 14, 2015 5:26 pm mandrei99
	How to replace dot or any character with AWK	mandrei99	0	15893	Tue Jan 28, 2014 6:35 am mandrei99
	AWK: How to replace a newline with actual \n	admin	0	2504	Thu Jul 20, 2017 11:02 am admin
	Unix shell - using TR to replace new lines with spaces	debuser	0	8832	Thu Feb 25, 2010 8:08 am debuser
	SED uncomment line - How to uncomment a line or all lines with SED	mandrei99	0	7766	Wed Jan 14, 2015 5:08 pm mandrei99
	Password generator with user inputs bash script	Kvr123	0	2302	Thu Dec 01, 2016 5:06 am Kvr123

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