command not found: problem with dash in filenames

[KES]

NOTICE: 
when I run purepw it is located and runned, but 
when I run pure-pw (NOTICE: dash in name) I get: Command not found
kes# env |grep PATH
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/root/bin
kes# env | grep PATH
PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/games:/usr/local/sbin:/usr/local/bin:/root/bin
kes# ls -l /usr/local/bin/pure*
-r-xr-xr-x  1 root  wheel  24052 12 авг 06:24 /usr/local/bin/pure-pw
-r-xr-xr-x  1 root  wheel   4432 12 авг 06:24 /usr/local/bin/pure-pwconvert
-r-xr-xr-x  1 root  wheel   6016 12 авг 06:24 /usr/local/bin/pure-statsdecode
kes# pure-pw
pure-pw: Command not found
kes# /usr/local/bin/pure-pw

Usage :

pure-pw useradd <login> [-f <passwd file>] -u <uid> [-g <gid>]
                -D/-d <home directory> [-c <gecos>]
                [-t <download bandwidth>] [-T <upload bandwidth>]
.........
kes# cp pure-pw purepw
kes# purepw

Usage :

pure-pw useradd <login> [-f <passwd file>] -u <uid> [-g <gid>]
                -D/-d <home directory> [-c <gecos>]
                [-t <download bandwidth>] [-T <upload bandwidth>]
........