topic Re: creating files in Operating System - HP-UX

creating files

Sandra R. — Thu, 05 Feb 2004 11:09:25 GMT

What's the most efficient way to create a larger number of files. Thanks

Re: creating files

Sridhar Bhaskarla — Thu, 05 Feb 2004 11:13:33 GMT

Hi,

If you are trying to create large number of null files, one way is

I=1
LIMIT=1000

while [ $I -le $LIMIT ]
do
touch file.${I}
(( I = $I + 1 ))
done

The above will create 1000 files in the current directory

There may be another efficient way of doing it.

-Sri

Re: creating files

Stefan Farrelly — Thu, 05 Feb 2004 11:15:31 GMT

Same thing - use a loop in a script and use touch, or the prealloc command (prealloc allows you to set the new file to any size whereas touch only creates an empty file).

Re: creating files

Robert-Jan Goossens — Thu, 05 Feb 2004 11:15:45 GMT

Hi,

How about this simple one,

# cp /stand/vmunix /tmp/test
# cd /tmp/test
# split -b 10 vmunix

Robert-Jan

Re: creating files

Mark Grant — Thu, 05 Feb 2004 11:16:08 GMT

Depends how many is large

"split -l 1 " on a 10000 line file will create 10000 one liners.

Another option would be

while true
do
(( a = a + 1 ))
> newfile.$a
done

Will continually create files until you get bored and press ^C though it will heavily use the machine.

Re: creating files

Steven E. Protter — Thu, 05 Feb 2004 11:17:24 GMT

I would say some kind of loop

while read -r ff
do
touch $ff.tar
done < filelist

How you generate the filelist depends on what you are trying to do.

SEP

Re: creating files

Michael Schulte zur Sur — Thu, 05 Feb 2004 11:20:59 GMT

Hi,

what do you want to do with so many files, crash the file system? ;-)

Michael