Update Alternative We will use Update Alternatives here, which is explained best by the first 2 man pages paragraphs (http://manpages.ubuntu.com/manpages/hardy/man8/update-alternatives.8.html): """ update-alternatives creates, removes, maintains and displays information about the symbolic linksRead More…

The output is like that of du, so you get the recursive output of every subfolder. # change /home to match the folder your interested in, change it to . for currentRead More…

If your copying files using cp or rsync or whatever method. Sometimes you want to see the new files or changed files in the past N seconds. You can do that likeRead More…

IFS Cheatsheet The IFS variable is the for loop delimiter. By default its set to space,tab,newline (first spaces are looked at as delimiters, and then tabs, and then newlines). This will causeRead More…

INTRO BTRFS RESTORE: runs thru the specified filesystem and tries to restore files and folders. Useful if the filesystem is not mountable. Here we will explore using different regular expression to dumpRead More…

CAUTION: before you continue, im not responsible for any data loss that these steps might cause you. everyone should have a backup of their data. Here is how you restore a reallyRead More…

Mapping ATA to Device Name source: http://superuser.com/questions/617192/mapping-ata-device-number-to-logical-device-name/938620#938620 source: http://www.phuket-data-wizards.com/blog/2011/07/16/matching-linux-ata-numbers-to-the-device-names/comment-page-1/#comment-164108 First Get the ata # (maybe its from some error message that you see in dmesg) The ata # is the unique_id withRead More…

source: http://www.tldp.org/HOWTO/archived/SCSI-Programming-HOWTO/SCSI-Programming-HOWTO-4.html To remove a drive from “cat /proc/partitions” similar to article here echo “scsi remove-single-device a b c d” > /proc/scsi/scsi echo “scsi add-single-device a b c d” > /proc/scsi/scsi a ==Read More…

In linux there is a tool called SMARTCTL which talks to the SMART modules on disks. Most current drives come with SMART. Its a chip on a disk that keeps diagnostics onRead More…