Shell Programming and Scripting

Hi,
Is it possible to write and run a shell script for specific directory( Apache/htdocs) that changes root privilege read/write to chmod 755 when a program uploads a file (word,PPT,XSL,..) to that directory

Thanks,
Mk

Yes, of course it is possible.

One way to do it is to have a crontab script that looks for new files in the directory of interest, then changes permissions when a new file is detected.

Pretty simple .....

Depending on how your upload program works, you can use it to trigger the same script, so you don't have to run a crontab.

Thanks for your reply.

The shell script should be aware all the time for that directory if any new file appears, change it to chmod 755 right away.
could you help to write that script?
Mk

"right away" needs to be defined!

Whatever you do, you'll have to poll the directory at regular intervals to see if your new file's arrived. That interval could be anything from 1 second upwards. You should be aware though, that a process that's running continuously and checking every second may have an impact on the rest of the processes running on your machine.

This is dangerous as it is a perpetual loop and doesn't have a way out. I'll leave you to work out the safety mechanisms! It works as the exit status of 'ls' is 0 (true) if the file exists.

HTH

Jerry