svm-checkdata: 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/svm-checkdata - from package: libsvm-tools

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

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