m68hc11-gprof: 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/m68hc11-gprof - from package: binutils-m68hc1x

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

Error in other languages:
m68hc11-gprof: bevel nie gevind nie
m68hc11-gprof: comandă negăsită
m68hc11-gprof: comando não encontrado
m68hc11-gprof: commande introuvable
m68hc11-gprof: command not found
m68hc11-gprof: käsku ei ole
m68hc11-gprof: không tìm thấy lệnh
m68hc11-gprof: komanda nerasta
m68hc11-gprof: Kommando nicht gefunden.
m68hc11-gprof: kommandot finns inte
m68hc11-gprof: komut yok
m68hc11-gprof: nie znaleziono polecenia
m68hc11-gprof: níor aimsíodh an t-ordú
m68hc11-gprof: no se encontró la orden
m68hc11-gprof: no s'ha trobat l'ordre
m68hc11-gprof: opdracht niet gevonden
m68hc11-gprof: parancs nem található
m68hc11-gprof: perintah tidak ditemukan
m68hc11-gprof: príkaz nenájdený
m68hc11-gprof: příkaz nenalezen
m68hc11-gprof: команда не найдена
m68hc11-gprof: командата не е открита
m68hc11-gprof: 命令找不到
m68hc11-gprof: コマンドが見つかりません