kcpolytest: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/kcpolytest - from package: kyotocabinet

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/kcpolytest - from package: kyotocabinet-utils

You may install the required package with command apt-get install {package}

Error in other languages:
kcpolytest: bevel nie gevind nie
kcpolytest: comandă negăsită
kcpolytest: comando não encontrado
kcpolytest: commande introuvable
kcpolytest: command not found
kcpolytest: käsku ei ole
kcpolytest: không tìm thấy lệnh
kcpolytest: komanda nerasta
kcpolytest: Kommando nicht gefunden.
kcpolytest: kommandot finns inte
kcpolytest: komut yok
kcpolytest: nie znaleziono polecenia
kcpolytest: níor aimsíodh an t-ordú
kcpolytest: no se encontró la orden
kcpolytest: no s'ha trobat l'ordre
kcpolytest: opdracht niet gevonden
kcpolytest: parancs nem található
kcpolytest: perintah tidak ditemukan
kcpolytest: príkaz nenájdený
kcpolytest: příkaz nenalezen
kcpolytest: команда не найдена
kcpolytest: командата не е открита
kcpolytest: 命令找不到
kcpolytest: コマンドが見つかりません