how to change the name of the file which is having space in between

how to change the name of the file which is having space in between

i have a file name called.

san con.cfg ( since it cannot be opened )

i want to rename it to
san_con.cfg

i tried to cat and mv .. but not working

did you try:

mv 'san con.cfg' san_con.cfg

thx ..

it works

also

mv san\ con.cfg san_con.cfg

which is what my shell translates to when i use tab completion
mv 'san[tab]