From: Osama Ahmed (osama@myrealbox.com)
Date: Fri Aug 29 2003 - 06:43:50 EDT
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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