elinks: 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/elinks - from package: elinks

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

On Debian possible default full paths are:

/usr/bin/elinks - from package: elinks

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

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