tchmgr: command not found

Have You tried accessing the binary with the full path?

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/tchmgr - from package: tokyocabinet

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

On Debian possible default full paths are:

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

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