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Check who is writing to a file? (pid)

 
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# 1  
Old 10-29-2010
Check who is writing to a file? (pid)
Hello,

is there a way to check who is writing to a file? (pid)

Like someone starts a ftp transfer, is uploading a file and I'd need to know which pid is actually writing to it.

Or is there a way to check which file a process is currently accessing?

Greetings and thanks for all your help in advance!
# 2  
Old 10-29-2010
Try the unix "fuser" command.
# 3  
Old 10-29-2010
Okey that works, but it has a wierd format.

What's the best way to select the PID or put into a var?

I need something like:

Code:
PID=`fuser $file | awk/sed....?`
if [ "$PID" != "" ]; then
kill $PID
fi

# 4  
Old 10-29-2010
Have a look at the man page man fuser
options -u and -k
# 5  
Old 10-30-2010
Please post the output from "fuser" on a typical file which is open for write. Depending on your O/S the output can appear jumbled unless you only process the output from one channel.

Code:
fuser filename 1>/dev/null
fuser filename 2>/dev/null

 
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