Hello Alejandro, On Thu, 2012-02-09 at 23:29 -0800, Alejandro Rodriguez Luna wrote: > #/bin/bash > for i in $(cat certificates.txt) > do > echo $i > done (As people already pointed out in case the input is coming from a file you should use a redirect.) What you see has to do with the internal field separator (IFS), which is usually set to space, tab and newline. Each of these characters is considered a field separator i.e. a break point in your list. You can read up on this at http://www.tldp.org/LDP/abs/html/internalvariables.html#IFSH . Regards, Leonard. -- mount -t life -o ro /dev/dna /genetic/research