jsvnlook: 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/jsvnlook - from package: svnkit

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

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