ocs-cvtimg-comp: 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/sbin/ocs-cvtimg-comp - from package: clonezilla

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

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