seealso: 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/seealso - from package: emboss

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

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