paths.sh: 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/share/dotlrn/bin/paths.sh - from package: dotlrn
/usr/share/openacs/bin/paths.sh - from package: openacs

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

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