/app/startMonitor.py

[mosehgunathas]

hi

can some one answer this question please,

1.You need to configure a Linux system to run the command /app/startMonitor.py as root every weekday at 6AM. What file do you edit, and what line would accomplish this requirement?

2. An application is required to start during the system boot, and to stop whenever the system is coming down. Describe the steps taken, and the files created to accomplish this.


3. What is the difference between the RHEL commands named rpm and the one named yum?



4. How would you start the command /app/startMonitor.py and redirect STDOUT to /app/log/monitor.log, but redirect STDERR to /app/log/monitor.err



5. How would you output the content of the Linux passwd file, ordered by the primary group ID of listed users



6. What configuration files do you need to edit/modify in order to make a Linux system authenticate users from a local network LDAP service

[semicolon]

That's a lot of questions in one, here we go:

1. You could use crontab for that (a short explanation can be found at http://forums.linuxmint.com/viewtopic.php?f=42&t=107884)

To run commands as root, I believe, you need to open crontab with sudo, so

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sudo crontab -e

Then add a line to the file that opens and save. To run a command every day at 6AM, add:

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0 6 * * * /usr/bin/somedirectory/somecommand

2. To run a program at startup you can add:

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@reboot /usr/bin/somedirectory/somecommand

3. Yum is a package manager which automatically resolves dependencies and so, whereas rpm is a more basic tool to install .rpm packages.

4. To redirect stdout and stderr:

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python /app/startMonitor.py 1>/app/log/monitor.log 2>/app/log/monitor.err

5. To output the passwd file sorted by primary group ID:

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cat /etc/passwd | sort --field-separator=: --key=4,4 --numeric-sort

6. I have absolutely no idea
Someone else may help you with that.

[mosehgunathas]

thanks a lot, God bless you