iscsi-swp: 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 Debian possible default full paths are:

/usr/bin/iscsi-swp - from package: libiscsi-bin

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