create a file



hi,
under linux redhat how to create an empty file with a defined size ?
how to put it at the end of another file ?

to create a 1m file:

code:

$ dd if=/dev/zero of=./tmpfile bs=1024 count=1024
1024+0 records in
1024+0 records out
1048576 bytes transferred in 0.033088 secs (31690552 bytes/sec)
$ ls -lh ./tmpfile
-rw-r--r--   1 user group       1m may 22 17:09 ./tmpfile
this file will be filled with \0's (nul's - man ascii).

if you really want to append this to another file, you could do

code:

$ cat somefile tmpfile > newfile
$ mv newfile somefile
after creating tmpfile.

cheers

how about

mkfile -n <size>

e.g:

mkfile -n 20k