[GRASSLIST:8175] New use--concat columns, join segments by attribute?

[Steven Gordon]

Hello,

Just subscribed to the GRASS List. I installed GRASS yesterday and  
got pretty far with it, despite not having a GIS or a UNIX background.

Two questions:

(1) Can GRASS's "Build polylines from line segments" join line  
segments based on a common attribute in a table? For example, if the  
table has "street name" as a column, can street segments be joined  
together that share the same name attribute?

(2) Does GRASS have a way of concatenating two columns of data in a  
table? If one column is FENAME and another is FETYPE, can a new  
column be built that has both FENAME and FETYPE values (but separated  
by a space)?

Thanks for you help.

   Steven Gordon