cob-config: 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 Debian possible default full paths are:

/usr/bin/cob-config - from package: open-cobol

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

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