grep between two lines with specified string - shell

Question

I have this simple plat file (file.txt)
a43
test1
abc
cvb
bnm
test2
test1
def
ijk
xyz
test2
kfo
I need all lines between test1 and test2 in two forms, the firte one create two new files like
newfile1.txt :
test1
abc
cvb
bnm
test2
newfile2.txt
test1
def
ijk
xyz
test2
and the second form create only one new file like :
newfile.txt
test1abccvbbnmtest2
test1defijkxyztest2
Do you have any propositions?
EDIT
For the second form. I used this
sed -n '/test1/,/test2/p' file.txt > newfile.txt
But it give me a result like
test1abccvbbnmtest2test1defijkxyztest2
I need a return line like :
test1abccvbbnmtest2
test1defijkxyztest2

Answer 1

You can use this awk:
awk -v fn="newfile.txt" '/test1/ {
f="newfile" ++n ".txt";
s=1
} s {
print > f;
printf "%s", $0 > fn
} /test2/ {
close(f);
print "" > fn;
s=0
} END {
close(fn)
}' file

Answer 2

Perl, like sed and other languages, has the ability to select ranges of lines from a file, so it's a good fit for what you're trying to do.
This solution ended up being a lot more complicated than I thought it would be. I see no good reason to use it over #anubhava's awk solution. But I wrote it, so here it is:
#!/usr/bin/perl
use 5.010;
use strict;
use warnings;
use constant {
RANGE_START => qr/\Atest1\z/,
RANGE_END => qr/\Atest2\z/,
SUMMARY_FILE => 'newfile.txt',
GROUP_FILE => 'newfile%d.txt'
};
my $n = 1; # starting number of group file
my #wg; # storage for "working group" of lines
# Open summary file to write to.
open(my $sfh, '>', SUMMARY_FILE) or die $!;
while (my $line = <>) {
chomp $line;
# If the line is within the range, add it to our working group.
push #wg, $line if $line =~ RANGE_START .. $line =~ RANGE_END;
if ($line =~ RANGE_END) {
# We are at the end of a group, so summarize it and write it out.
unless (#wg > 2) {
# Discard any partial or empty groups.
#wg = ();
next;
}
# Write a line to the summary file.
$sfh->say(join '', #wg);
# Write out all lines to the group file.
my $group_file = sprintf(GROUP_FILE, $n);
open(my $gfh, '>', $group_file) or die $!;
$gfh->say(join "\n", #wg);
close($gfh);
printf STDERR "WROTE %s with %d lines\n", $group_file, scalar #wg;
# Get ready for the next group.
$n++;
#wg = ();
}
}
close($sfh);
printf STDERR "WROTE %s with %d groups\n", SUMMARY_FILE, $n - 1;
To use it, write the above lines into a file named e.g. ranges.pl, and make it executable with chmod +x ranges.pl. Then:
$ ./ranges.pl plat.txt
WROTE newfile1.txt with 5 lines
WROTE newfile2.txt with 5 lines
WROTE newfile.txt with 2 groups
$ cat newfile1.txt
test1
abc
cvb
bnm
test2
$ cat newfile.txt
test1abccvbbnmtest2
test1defijkxyztest2

Answer 3

For the second for you can add a new line after "test2" adding \n
sed -n '/test1/,/test2/p' file.txt | sed -e 's/test2/test2\n/g' > newfile.txt
sed is not useful to create multiple files so for the first one you should find another solution.