nqs_hold.sh: 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 CentOS possible default full paths are:

/usr/libexec/condor/glite/bin/nqs_hold.sh - from package: condor

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