Say you just bought an Amazon Kindle or a Barnes and Noble Nook. You want to convert your eBook collection to .EPUB or .MOBI format. For this, install Calibre. The application not only provides you with a graphical way to manage your eBook collection, but also comes with a set of useful command-line tools. One… Read More »
If you have a ton of images that need resizing, you can do it all with the imagemagick package:cd /home/user/imagesmkdir resized_imagescp /home/user/images/* /home/user/images/resized_images Now that you have a copy of the files in resized_images, time to resize them all: mogrify -resize 800 *.jpg This will resize them all to a width of 800px while keeping… Read More »
If you are on a LAN and wish to find out which computers in it currently have access to that certain LAN, you can use the following command: for ip in $(seq 1 254); do ping -c 1 192.168.1.$ip>/dev/null; [ $? -eq 0 ] && echo “192.168.1.$ip UP” || : ; done This will ping… Read More »
If you are pestered by the bug that doesn;t let you mount USB devices in Ubuntu Lucid Lynx, the issue is caused by the floppy module. Disable it with sudo modprobe -r floppy and reboot.