kchashtest: 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/kchashtest - from package: kyotocabinet

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

On Debian possible default full paths are:

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

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

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