giira: 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/giira - from package: giira

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