Lunix split with ruby

Ruby
1

I am using cygwin on windows.
I write this script. I have to split all files in the
directory.

Dir.foreach(‘C:/tmp/test’) {|file|
f = system( “split -l 60000 #{file}”)
puts “file name : #{f}”
}

My files is
file1.txt 10mb
file2.txt 14mb
file3.txt 8mb
file4.txt 5mb

I want to split the files
file1-1.txt
file1-2.txt
file1-3.txt
…

file4-1.txt
file4-2.txt

how can i do it ?

please help me.

2

unknown wrote:

On Wed, Oct 7, 2009 at 6:19 AM, Ahmet K. [email protected]
wrote:

file1-1.txt
file1-2.txt
file1-3.txt
…

how can i do it ?

please help me.

What (incorrect) output does your current script produce?

the output is only
xaa
xab
xac
xad
…

I want to loop all files and split for each around 1mb.

3

On Wed, Oct 7, 2009 at 6:19 AM, Ahmet K. [email protected]
wrote:

file1-1.txt
file1-2.txt
file1-3.txt
…

how can i do it ?

please help me.

What (incorrect) output does your current script produce?

4

unknown wrote:

On Wed, Oct 7, 2009 at 11:25 AM, Ahmet K. [email protected]
wrote:

please help me.
I want to loop all files and split for each around 1mb.
Okay, that helps; looks like by default split names the files
“xaa”…“xzz”:

http://unixhelp.ed.ac.uk/CGI/man-cgi?split

As as first pass (still won’t be quite what you asked for) try changing:

“split -l 60000 #{file}”

to:

“split -l 60000 #{file} #{file}-”

that should change the output file names from “x” + “#{counter}” to
“#{file}” + “-” + “#{counter}”

thank you for quick reply. I cold not understand counter. Where is it
coming?
like this counter = 0
and counter file + 1 ???

5

On Wed, Oct 7, 2009 at 11:25 AM, Ahmet K. [email protected]
wrote:

please help me.
I want to loop all files and split for each around 1mb.
Okay, that helps; looks like by default split names the files
“xaa”…“xzz”:

http://unixhelp.ed.ac.uk/CGI/man-cgi?split

As as first pass (still won’t be quite what you asked for) try changing:

“split -l 60000 #{file}”

to:

“split -l 60000 #{file} #{file}-”

that should change the output file names from “x” + “#{counter}” to
“#{file}” + “-” + “#{counter}”

6

unknown wrote:

On Wed, Oct 7, 2009 at 11:57 AM, Ahmet K. [email protected]
wrote:

thank you for quick reply. I cold not understand �counter. Where is it
coming?
like this counter = 0
and �counter file + 1 ???

Sorry, yes that was unclear; it was just representing the “aa”…“az”
that split tacks on to the end of the file name. So, I’m thinking
that will produce output files named like:

file1.txt-aa
file1.txt-ab
file1.txt-ac
file2.txt-aa
file3.txt-ab
...

sorry for late reply.
I was thinking like that but it was not work for me.
thank you for help.

7

On Wed, Oct 7, 2009 at 11:57 AM, Ahmet K. [email protected]
wrote:

thank you for quick reply. I cold not understand counter. Where is it
coming?
like this counter = 0
and counter file + 1 ???

Sorry, yes that was unclear; it was just representing the “aa”…“az”
that split tacks on to the end of the file name. So, I’m thinking
that will produce output files named like:

file1.txt-aa
file1.txt-ab
file1.txt-ac
file2.txt-aa
file3.txt-ab
...
8

thank you very much.

9

Ahmet K. wrote:

file1.txt-aa
file1.txt-ab
file1.txt-ac
file2.txt-aa
file3.txt-ab
...

sorry for late reply.
I was thinking like that but it was not work for me.
thank you for help.

use
split -d -l 60000 ${file} ${file}-
which should give you files of the format
$file-01
$file-02
$file-0…

if the split file is going to generate more than 99 files, add -a 4 to
the parameters…

i.e.
split -d -l 60000 MyFile.txt MyFile.txt-
gives
MyFile.txt-01
MyFile.txt-02
MyFile.txt-03
MyFile.txt-…

Then write a script that renames the files ala

for file in ls MyFile.txt-*
do
prefix=${file%%.txt*}

echo $prefix

 suffix=${file##file.txt}

echo $suffix

 echo ${prefix}${suffix}.txt
 mv $file ${prefix}${suffix}.txt

done