Nice Cacti Install How To

0 Comments | This entry was posted on Apr 21 2009

RedHat / CentOS Install and Configure Cacti Network Graphing Tool

0 Comments | This entry was posted on Apr 16 2009

A disastrous mistake anyone can make on their Linux server is to chown or chmod their entire filesystem.

You can reset the permissions of packages installed with rpm.

To reset file permissions:

root@empulse:$ rpm --setperms {packagename}

To reset ownership permissions:

root@empulse:$ rpm --setugids {packagename}

0 Comments | This entry was posted on Apr 04 2009

Search for multiple processes in one command. Example in using multiple variables.

root@empulse:$ ps auxf | grep -P '(wincompd:|proftpd:)'

Lower the reserved disk space to 0%. By default Linux will reserve 5% of each file system as reserve free disk space.

root@empulse:$ tune2fs -m 0 /dev/hda5 remove reserved space

Compare two files on two remote file systems. I saw this on Command-line-fu.

root@empulse:$ diff <(ssh alice cat /etc/apt/sources.list) <(ssh bob cat /etc/apt/sources.list)