[SUMMARY] Knowing EOT or EOF from a shell script

Sorry for being late (Summer Times!!). 
Credits to:
 - Bruntel, Mitchell L, ALABS 
 - Jay Lessert 
 - Crist Clark 
 - Reggie Beavers 
 - Hichael Morton 
 - Tim ttg 
 - Smith, Kevin 

- General consensus is to use fuser/lsof to see if ftp/rcp is using
  the file FEED1 or not. If not then most probably the transfer is
  finished. This only if the file is being written by a local 
  process (ftpd, rshd, sshd), lsof/fuser will tell you when the 
  file is not open any more. If the file is being written over NFS 
  the open file handle is on the other host.

- No EOF character actually appears in a file, unless
  these are special files that you happen to know the format for

- It would be best if the sending application also dropped a
  signature file containing that information after it finished
  sending the payload file.

- What about checking file-size, sleep 10. If filesize hasn't changed,
  check 3 more times, then say done?
   
Cheers ! 

/Os

-----Original Message-----
From: Osama Ahmed [mailto:osama@myrealbox.com]
Sent: Friday, August 15, 2003 4:55 AM
To: sunmanagers@sunmanagers.org
Subject: Knowing EOT or EOF from a shell script


Hi Gurus,
This might be slightly off topic but I really need your help.

I have a group of binary files with a big variable file size 
being transferred to a shared location(Solaris Machine). 
The transfer is done first by allocating a file name and then 
feed the bytes into it.

i.e:
ls -l 
-rwxr-xr-x   1 root   adm       166132 Aug 10  2003 FEED1

After 3 sec
ls -l
-rwxr-xr-x   1 root   adm       168180 Aug 10  2003 FEED1

And so on.

My duty is to know(through a Shell script) when each file fully 
and completely transferred to the shared location then transfer
it to my V880 server. ( I did not know the original size of the 
file or its checksum !)

My questions:
  - Is there a way to know that the file is completely 
transferred ? (like checking for an EOF byte in the binary 
file-- I tried strings but no luck! )

  - Is there a command to know that the file is closed ?

Thanks and appreciate the help.

IWS 

/Os 
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