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How to check if a script is writing to a log

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# 1  
Old 02-03-2011
How to check if a script is writing to a log
Hello,
I have various scripts that writes to logs ( >> ) in different directories.
I have create a script to automatically check different direcories for different errrors. However I do not want to remove logs if a script is still writing to a log.
Is the log file opened for writing when the script apends to it ? How can I check this?
# 2  
Old 02-03-2011
tail -f <log_file>

the above will give you the log latest updates. If it shows only last 10 lines and the log is not moving then no script is writing into this file.
# 3  
Old 02-03-2011
Hello and thanks for the reply. I know about tail, but I need something more general, cause I have loads of logs. Eg can I check if the file is open for writing by the script or something similar ?
# 4  
Old 02-03-2011
You could try lsof <logfile> if available on your platform.
# 5  
Old 02-03-2011
I'll check and let you know :-)
# 6  
Old 02-03-2011
after every run append the log file to one file then your log file data is saved and it will get update every time...
# 7  
Old 02-03-2011
lsof exists but unfortunatelly : sh: lsof: Execute permission denied.
I don't have root access therefore I cannot chmod lsof :-(
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