schism: command not found

Have You tried accessing the binary with the full path?

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/schism - from package: schism

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