ssh-import-id-lp: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/ssh-import-id-lp - from package: ssh-import-id

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