Transform TAR Archived File Names

Prepend mypackage-0.1 to each archived file and compress the archive using bzip2 in one round:
tar --xform 's,^,mypackage-0.1/,' -cjf mypackage-0.1.tar.bz2 bin/ conf/ doc/ log/ Makefile

Unix Timestamp

Display current or specified date in Unix epoch:
date --utc +%s
date --utc +%s -d '2012-01-01 00:00:00'

Partition Cloning Over Network

Copy disk layout stored in MBR if needed:

Start Netcat receiver on the destination ( and reread MBR after copying is finished:
nc -l -p 1234 > /dev/sda
partprobe /dev/sda
And send first 512 bytes from the source:
dd if=/dev/sda bs=512 count=1 | nc 1234
Copy desired partition:

Start Netcat receiver on the destination again:
nc -l -p 1234 > /dev/sda1
And send partition raw data over the wire:
dd if=/dev/sda1 | nc 1234

Reread MBR

Apply changes in disk layout: