kclangctest: 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/kclangctest - from package: kyotocabinet

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

On Debian possible default full paths are:

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

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

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