Different behavior of mktemp Ubuntu 12.02 / Mint 9 Isadora

Different behavior of mktemp Ubuntu 12.02 / Mint 9 Isadora References In a bash script I use ImageMagick\'s convert command for doing some image processing. I generate a temporal gif file for convert to write to. I really need the file to have the .gif extension so convert knows that the destination file should be a gif file. In Ubuntu 12.04 the following works fine: mktemp /tmp/pre_XXXXXXXXXX.gif But in Mint 9 Isadora I get the following error: mktemp: too few X\'s in template No matter how many X\'s I give it, it gives the same error, which is only fixed when I delete the \".gif\" suffix. Why is that ? Isn\'t Mint based on Ubuntu ?