svm-subset: 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

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/svm-subset - from package: libsvm-tools

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