tcbtest: 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/tcbtest - from package: tokyocabinet

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

On Debian possible default full paths are:

/usr/bin/tcbtest - from package: tokyocabinet-bin

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

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