Use the -l parameter of scp to limit the speed of a file transfer (both upload or download). An empirically tested, good value for a 54Mbit wireless connection is 18000:

   1  scp -l 18000 remotehost:file.img .

   1  ssh-keygen -t dsa
   2  ssh-copy-id -i ~/.ssh/id_dsa.pub user@server

OS X doesn’t come equipped with ssh-copy-id but you can download the script from here.

Remove id3 tags from MP3 files recursively.

   1  #!/bin/bash
   2  # By Marko Haapala
   3  # requirements:
   4  # id3ed - apt-get install id3ed
   5  IFS=$'\n'
   6  for mp3_file in $(find ./ -type f -iname '*.mp3'); do
   7  	id3ed -r "${mp3_file}"
   8  done

Use this to convert WMA files to MP3 in Linux.

   1  #!/bin/bash
   2  # By Marko Haapala
   3  # converts wma to mp3 recursively. does not delete any static files, so 
   4  # cleanup and renaming is needed afterwards. 
   5  #
   6  # requirements:
   7  # lame    - http://lame.sourceforge.net/download.php
   8  # mplayer - apt-get install mplayer or http://www.mplayerhq.hu/design7/dload.html
   9  
  10  
  11  current_directory=$(pwd)
  12  wma_files=$(find "${current_directory}" -type f -iname "*.wma")
  13  # Need to change IFS or files with filenames containing spaces will not
  14  # be handled correctly by for loop
  15  IFS=$'\n' 
  16  for wma_file in ${wma_files}; do 
  17  	mplayer -vo null -vc dummy -af resample=44100 \
  18  	-ao pcm -ao pcm:waveheader "${wma_file}" && lame -m s \
  19  	audiodump.wav -o "${wma_file}".mp3
  20  	rm audiodump.wav
  21  done

The following is an example of how to transfer a partition from one server to another.

In the example, I first create a file containing the partition, and then transfer the partition to the other server.

   1  dd if=/dev/xen-1/aktagon.com-disk of=/tmp/file
   2  scp /tmp/file username@host:/file

I then SSH to the other server and create the partition from the file.

   1  ssh host
   2  lvcreate -L 4G /dev/VG00/aktagon.com-disk
   3  cat aktagon.com-disk.bz2 > /dev/aktagon-1/aktagon.com-disk

Remember to create a backup before running these commands.