condor_continue: 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/condor_continue - from package: condor

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

On Debian possible default full paths are:

/usr/bin/condor_continue - from package: htcondor

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

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