IBIZA >ls

SN10738.ksh            
calculo_SN10738.ksh                        
separa_tabllama.awk
SN10738.log          
calculo_SN10738B.ksh
transferSN10738A.ksh
filtroSN10738A.ksh
separaVielinSN10406.ksh

IBIZA >perl -e 'while(<*>){if(-f && /\.(\w+)$/){$e{$1}++}}print "$_ ->
+ $e{$_}\n" for keys %e'

ksh -> 6
awk -> 1
log -> 1
[download]

SHELL:

IBIZA >ls | cut -sf2 -d. | sort | uniq -c

   6 ksh
   1 awk
   1 log
[download]