colrm: 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/bin/colrm - from package: util-linux-ng

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

On Debian possible default full paths are:

/usr/bin/colrm - from package: bsdmainutils

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

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