src2tex: 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/src2tex - from package: src2tex

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

Error in other languages:
src2tex: bevel nie gevind nie
src2tex: comandă negăsită
src2tex: comando não encontrado
src2tex: commande introuvable
src2tex: command not found
src2tex: käsku ei ole
src2tex: không tìm thấy lệnh
src2tex: komanda nerasta
src2tex: Kommando nicht gefunden.
src2tex: kommandot finns inte
src2tex: komut yok
src2tex: nie znaleziono polecenia
src2tex: níor aimsíodh an t-ordú
src2tex: no se encontró la orden
src2tex: no s'ha trobat l'ordre
src2tex: opdracht niet gevonden
src2tex: parancs nem található
src2tex: perintah tidak ditemukan
src2tex: príkaz nenájdený
src2tex: příkaz nenalezen
src2tex: команда не найдена
src2tex: командата не е открита
src2tex: 命令找不到
src2tex: コマンドが見つかりません