[Trisquel-users] Re : Need to compare numbers - Help with script

[lcerf]

Well, a (formal) language is defined as a set of words.  Using that  
definition all valid regular expressions (as given to grep) are a language,  
all valid AWK programs are a language, etc.

AWK is a simple programming language.  Contrary to grep (but like sed, what  
is surprising), it is Turing-complete: it can compute anything that can  
theoretically be computed.  But it is specialized in text-processing: it  
processes an input record by record (line by line, by default), automatically  
splits the record into fields, etc.  Also, it shares with grep and sed the  
heavy use of regular expressions (the variables RS and FS I wrote about are  
regular expressions, conditions can be regular expressions, etc.).