scheme-srfi-0: 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 CentOS possible default full paths are:

/usr/lib64/gambit-c/bin/scheme-srfi-0 - from package: gambit-c

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/scheme-srfi-0 - from package: gambc

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

Error in other languages:
scheme-srfi-0: bevel nie gevind nie
scheme-srfi-0: comandă negăsită
scheme-srfi-0: comando não encontrado
scheme-srfi-0: commande introuvable
scheme-srfi-0: command not found
scheme-srfi-0: käsku ei ole
scheme-srfi-0: không tìm thấy lệnh
scheme-srfi-0: komanda nerasta
scheme-srfi-0: Kommando nicht gefunden.
scheme-srfi-0: kommandot finns inte
scheme-srfi-0: komut yok
scheme-srfi-0: nie znaleziono polecenia
scheme-srfi-0: níor aimsíodh an t-ordú
scheme-srfi-0: no se encontró la orden
scheme-srfi-0: no s'ha trobat l'ordre
scheme-srfi-0: opdracht niet gevonden
scheme-srfi-0: parancs nem található
scheme-srfi-0: perintah tidak ditemukan
scheme-srfi-0: príkaz nenájdený
scheme-srfi-0: příkaz nenalezen
scheme-srfi-0: команда не найдена
scheme-srfi-0: командата не е открита
scheme-srfi-0: 命令找不到
scheme-srfi-0: コマンドが見つかりません