changepermissions: 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/lib/wims/bin/changepermissions - from package: wims

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