condor_ssh_to_job: 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_ssh_to_job - from package: condor

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

On Debian possible default full paths are:

/usr/bin/condor_ssh_to_job - from package: htcondor

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

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