adding new line after finding specific text

Shell Programming and Scripting
1

hello i need some help here are the contents of my file.

test.txt

this is filename 1.mp3 http://www.url.com/filenamehashed
filename 2.mp3 http://www.url.com/fileamehashed
something_else.zip http://www.url.com/filenamehashed

so this file has 100 of these lines
filename url

I would like to alter this file so the output is this:
filename
url
empty space
filename
url
emptyspace
filename
url
emptyspace
etc etc

how would i go about doing this? one liners would be perfect.

thank you for your help

2

you can use awk

awk '{printf "%s\n%s\n\n",$1,$2}' inputfile
3

the file names contains spaces as shown in his sample, therefore using $1 and $2 might not be appropriate.

@OP, if you have Python, an alternative solution

#!/usr/bin/env python
for line in open("file"):
    line=line.strip().split()
    filename = ' '.join(line[:-1])
    url=line[-1]
    print filename
    print url
    print

output

# ./test.py
this is filename 1.mp3
http://www.url.com/filenamehashed

filename 2.mp3
http://www.url.com/fileamehashed

something_else.zip
http://www.url.com/filenamehashed
4

With sed:

cat infile 
this is filename 1.mp3 http://www.url.com/filenamehashed
filename 2.mp3 http://www.url.com/fileamehashed
something_else.zip http://www.url.com/filenamehashed
% sed 's|\(.*\)\(http://.*\)|\1\
\2\
|' infile
this is filename 1.mp3 
http://www.url.com/filenamehashed

filename 2.mp3 
http://www.url.com/fileamehashed

something_else.zip 
http://www.url.com/filenamehashed
5

thank you all for your ideas and replies..

i tried the sed one

sed 's|\(.*\)\(http://.*\)|\1\\2\|' test.txt
sed: -e expression #1, char 29: unterminated `s' command

is my syntax wrong?

6

you did a typo error look closely what radoulove written
full code is not written in single line

7

perl:

while(<DATA>){
	my @tmp=split(/ (?=http.*)/,$_);
	print $tmp[0],"\n";
	print $tmp[1];
	print "\n";
	
}
__DATA__
this is filename 1.mp3 http://www.url.com/filenamehashed
filename 2.mp3 http://www.url.com/fileamehashed
something_else.zip http://www.url.com/filenamehashed
8

Or:

print join "\n", m|(.*)(http://.*)|, "\n"
  while <DATA>;
__DATA__
this is filename 1.mp3 http://www.url.com/filenamehashed
filename 2.mp3 http://www.url.com/fileamehashed
something_else.zip http://www.url.com/filenamehashed
9

sed 's|\(.*\)\(http://.*\)|\1\\2\|' infile

Can you please explain this command.

Thanks in advance

10

Go through the below link. Which is having very useful information about sed.

www.grymoire.com/Unix/Sed.html