tcttest: 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/tcttest - from package: tokyocabinet

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

On Debian possible default full paths are:

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

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

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