Rprof: 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/R/bin/Rprof - from package: R-core
/usr/lib/R/bin/Rprof - from package: R-core

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

On Debian possible default full paths are:

/usr/lib/R/bin/Rprof - from package: r-base-core

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

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