UNIX for Dummies Questions & Answers

I have several las files with a header and each file start Version and text and before the data starts end up with ~Ascii, then the numbers starts:
-------------------------------------------------------------------------

Code:
~Version
.....text....
~Ascii
2 abc 230 1 name
1 abc 400 1 name2
3 abb 350 2 name

----------------------------------------------------------------------------
What I want to do is to keep the header as it is and sort with the first column
the result to look something as following :
Code:
~Version
.....text....
~Ascii
1 abc 400 1 name2
2 abc 230 1 name
3 abb 350 2 name

and if it is possible to run for all files in one go, since all the files are *.las file?

thank
T