svm-predict: 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-predict - from package: libsvm

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

On Debian possible default full paths are:

/usr/bin/svm-predict - from package: libsvm-tools

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

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