svm-checkdata.py: 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 CentOS possible default full paths are:

/usr/bin/svm-checkdata.py - from package: libsvm-python

You may install the required package with command yum install {package}

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