showalign: 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 Debian possible default full paths are:

/usr/bin/showalign - from package: emboss

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

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