imp2ld: 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/imp2ld - from package: sword

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

On Debian possible default full paths are:

/usr/bin/imp2ld - from package: libsword-utils

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

Error in other languages:
imp2ld: bevel nie gevind nie
imp2ld: comandă negăsită
imp2ld: comando não encontrado
imp2ld: commande introuvable
imp2ld: command not found
imp2ld: käsku ei ole
imp2ld: không tìm thấy lệnh
imp2ld: komanda nerasta
imp2ld: Kommando nicht gefunden.
imp2ld: kommandot finns inte
imp2ld: komut yok
imp2ld: nie znaleziono polecenia
imp2ld: níor aimsíodh an t-ordú
imp2ld: no se encontró la orden
imp2ld: no s'ha trobat l'ordre
imp2ld: opdracht niet gevonden
imp2ld: parancs nem található
imp2ld: perintah tidak ditemukan
imp2ld: príkaz nenájdený
imp2ld: příkaz nenalezen
imp2ld: команда не найдена
imp2ld: командата не е открита
imp2ld: 命令找不到
imp2ld: コマンドが見つかりません