uncat: 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/uncat - from package: socklog

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

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