Hi all, sorry if this is not the appropriate list to post my question, but surely more than one guru here will be able to guide me in my modest quest. Here is my problem: I have a lot of data files, which differ in their name by a number, for example: data-theta=0-np=1.2 data-theta=0-np=1.3 data-theta=0-np=1.4, ...and so on. All files have the same structure (same number of columns and lines); each single entry is a real number in free exp format, i.e. it looks like this: 0.1224e01, but it is not important, I think What I want to do is to create a new file, with one line from each of the data files (say, line beginning with 0.01e00), adding to each line in the new file the number appearing in the name of the corresponding data file. That is, the new file will contain one more column than the original ones; the new file would be 0.01e00 .... .... .... 1.2 0.01e00 .... .... .... 1.3 0.01e00 .... .... .... 1.4 . . Hope you can help!!!! Many Thanks in advance! Fabio Zyserman - To unsubscribe from this list: send the line "unsubscribe linux-admin" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html