cyberdoc:#

cd bin/

Exim4 - delete msg queue with one command:

if the message is frozen
 exim4 -bpru|grep frozen|awk {'print '}|xargs exim4 -Mrm
 
 if the message is <>
 exim4 -bpru|grep '<>'|awk {'print '}|xargs exim4 -Mrm
 
 if all
 exim4 -bpru|awk {'print '}|xargs exim4 -Mrm
  

How to replace ^M characters from a file using perl

perl -pi -e "s/\cM//g" /path/to/file 

ImageMagick Tricks

Convert to RGB

convert -colorspace rgb test1.tif test1.jpg

Convert from PDF to JPG 

convert -resize 200x200 -quality 100 -colorspace rgb test1.pdf test1.jpg

Reference: http://www-128.ibm.com/developerworks/library/l-graf/?ca=dnt-428