clirr: command not found

Have You tried accessing the binary with the full path?

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/clirr - from package: clirr

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