nedit: 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/nedit - from package: nedit

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

On Debian possible default full paths are:

/usr/bin/nedit - from package: nedit

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

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