topic Re: How to veiw same file diff lines in Operating System - HP-UX

How to veiw same file diff lines

jayachandran.g — Thu, 15 Sep 2005 09:18:27 GMT

Hi

I have a file ll.log

say thr is 1000 lines in this file. How i can extract 10 files each for seperate files.

cat,head and tail commbination is capable of doing only one group of lines at a time. is thr a command that can extract mulitple group of lines at the same time.

as if every file is too big it is taking a lot of time with cat head and tail.

Thank You

Re: How to veiw same file diff lines

Robert-Jan Goossens_1 — Thu, 15 Sep 2005 09:21:25 GMT

Hi,

How about using the split command

SYNOPSIS
split [-l line_count] [-a suffix_length] [file [name]]

split [-b n[k|m]] [-a suffix_length] [file [name]]

Regards,
Robert-Jan

Re: How to veiw same file diff lines

Orhan Biyiklioglu — Thu, 15 Sep 2005 09:23:14 GMT

split -l 100 file outfile

will create 10 output files with 100 lines from the input file in each.

Re: How to veiw same file diff lines

jayachandran.g — Thu, 15 Sep 2005 09:28:05 GMT

Thanks Robert and Orhan

Sorry the lines numbers are differing for first few files it iwll be 10, some times it will be 18 and 47 also. there are 4 combinations 10,28,47,192

Re: How to veiw same file diff lines

Orhan Biyiklioglu — Thu, 15 Sep 2005 09:35:49 GMT

You can try using sed to print the selected lines of a file.

sed -n -e '1,5p' file will print only the lines from 1 to 5 and sed -n -e '5,10p' will print from 5 to 10.

You can use this in a shell script to print different portions of the file and than redirect the output to different output files.

Re: How to veiw same file diff lines

Raj D. — Thu, 15 Sep 2005 09:55:39 GMT

Hi Jayachandran ,

Try split , it will split the file with 10 file of 100 lines each.

Here it is :

# split -l 100 file1 file2

The output will be named automatically as

file2aa
file2ab
file2ac
file2ad
file2ae
file2af
file2ag
file2ah
file2ai
file2aj
--------------

Cheers,
Raj.

Re: How to veiw same file diff lines

Sandman! — Thu, 15 Sep 2005 11:58:38 GMT

The sed command will do exactly what you're looking for as long as you know the FROM and TO line numbers in the input file that need to be extracted into 10 separate files. For example:

# sed '
> 1,10w 1.out
> 10,47w 2.out
> 18,47w 3.out
> 47,192w 4.out
> ' inputfile

cheers!

Re: How to veiw same file diff lines

jayachandran.g — Mon, 16 Jan 2006 09:52:30 GMT

Thanks for all your valuble reply by using sed command i have achived my target thank you.