toms: 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

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/toms - from package: flip

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