File System manipulations

Clone entire file system

On source: 
dd if=/dev/sda  | gzip  -cf | nc <destination-system-ip> <port>

On destination: 
nc -l -p <port> | gzip –dfc | dd of=/dev/sda



(http://conshell.net/wiki/index.php/Linux_P2V)

List files larger than specified size

ls <folder> | xargs -n 100 du -k | sort -n | tail -n <number_of_files> | awk '{if ($1 > <desired_size>) print $2}'

Massive files rename

ls -d *.<old_extension> | sed 's/\(.*\).<old_extension>$/mv "&" "\1.<new_extension>"/' | sh

Redirect output as su

echo blahblah | sudo tee /somefile

Remove all subfolders matching criteria

rm -rf `find ./<you folder> -type d -name <criteria>`

Remove folders older than X days

find /<your folder>* -mtime +X -exec rm {} -f \;

Sync folders (resumable)

rsync -r --partial --progress --rsh=ssh user@server:/sorce/ /dest/