colcrt: 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/colcrt - 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/colcrt - from package: bsdmainutils

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

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