tcbmgr: 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/tcbmgr - from package: tokyocabinet

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

On Debian possible default full paths are:

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

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

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