syco: 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/syco - from package: emboss

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

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