dmtcp_coordinator: 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/dmtcp_coordinator - from package: dmtcp

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

On Debian possible default full paths are:

/usr/bin/dmtcp_coordinator - from package: dmtcp

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

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