gsoelim: 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/gsoelim - from package: groff

You may install the required package with command yum install {package}

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