topic Re: tail command in Operating System - HP-UX

tail command

Simon R Wootton — Thu, 11 Jul 2002 15:06:52 GMT

I have a file which is 275,000 lines long and I only want the last 25,000 so I can put then in Excel for analysis. How can I get them using the tail command ?

Re: tail command

Anu Mathew — Thu, 11 Jul 2002 15:08:44 GMT

Hi Simon,

Use

tail -n 25000
Hope this helps,

Thanks

Anu Mathew

Re: tail command

S.K. Chan — Thu, 11 Jul 2002 15:10:32 GMT

$ tail -n 25000

Do "man tail" for details of available option.

Re: tail command

Sanjay_6 — Thu, 11 Jul 2002 15:10:42 GMT

Hi,

Try

tail -25000 file_name > new_file_name

Hope this helps.

Regds

Re: tail command

A. Clay Stephenson — Thu, 11 Jul 2002 15:11:38 GMT

tail -n 25000 infile > outfile

Re: tail command

Tom Maloy — Thu, 11 Jul 2002 15:11:54 GMT

You can try

tail -25000 inputfile

You might prefer to use split instead:

split -250000 inputfile

and import the file "xab" into Excel.

Tom

Re: tail command

Simon R Wootton — Thu, 11 Jul 2002 15:12:47 GMT

Thanks to all - I sorted it 20 secs after leaving the forum !

Re: tail command

James R. Ferguson — Thu, 11 Jul 2002 15:19:24 GMT

Hi SImon:

'tail' will not handle very large files. You can use 'sed' to mimic 'head' and 'tail'. For example:

# sed -e '1,5d' myfile #...removes lines 1-5

# sed -e '1,5!d' myfile # ...keeps only lines 1-5

Regards!

...JRF...