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

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

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