Sunday, July 6, 2008

nixCraft Linux Sys Admin Blog

nixCraft Linux Sys Admin Blog

Link to nixCraft Linux Sys Admin Blog

Richard Stallman Attacks On Proprietary Software Vendors

Posted: 05 Jul 2008 06:41 PM CDT

Gates may be gone, but the walls and bars of proprietary software he helped create remain, for now -- Richard Stallman.

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How To Reset Linux Firewall Automatically While Testing Configuration With Remote Server Over SSH Session

Posted: 06 Jul 2008 09:43 AM CDT

I'd like to tell my Linux iptables firewall to flush out the current configuration every 5 minutes. This will help when I'm testing a new rules and configuration options. Some time I find myself locked out of my own remote server. How do I reset Linux firewall automatically without issuing hard reboot?

Answer to "How To Reset Linux Firewall Automatically While Testing Configuration With Remote Server Over SSH Session"


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How To Simulate Linux Package Upgrade Without Installing Anything ( Dry Run )

Posted: 06 Jul 2008 08:24 AM CDT

How do I simulate the upgrade first to confirm that the actions that would be taken are reasonable under Debian / Ubuntu Linux package management?

Answer to "How To Simulate Linux Package Upgrade Without Installing Anything ( Dry Run )"


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Throttle The Disk I/O Rate: Limit disk I/O for rsync Tool

Posted: 05 Jul 2008 09:25 PM CDT

I run a backup script called /root/backup.sh which runs rsync command. However, rsync makes a lots of disk I/O and network I/O. I'd like to reduce both disk I/O and network I/O. I've 10Mbps server connection and 160GiB SATA hard disk. How do reduce disk I/O so that the entire system doesn't die or become unresponsive?

Answer to "Throttle The Disk I/O Rate: Limit disk I/O for rsync Tool"


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How To Set Red hat / CentOS Linux Remote Backup / Snapshot Server

Posted: 05 Jul 2008 06:12 PM CDT

I've HP RAID 6 server running RHEL 5.x. I'd like to act this box as a backup server for my other Red Hat DNS and Web server. The server must keep backup in hourly, daily and monthly format. How do I configure my Red Hat / CentOS Linux server as remote backup or snapshot server?

Answer to "How To Set Red hat / CentOS Linux Remote Backup / Snapshot Server"


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