mysql-zrm-manage-backup: 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
/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/mysql-zrm-manage-backup - from package: MySQL-zrm

You may install the required package with command yum install {package}
Error in other languages:
mysql-zrm-manage-backup: bevel nie gevind nie
mysql-zrm-manage-backup: comandă negăsită
mysql-zrm-manage-backup: comando não encontrado
mysql-zrm-manage-backup: commande introuvable
mysql-zrm-manage-backup: command not found
mysql-zrm-manage-backup: käsku ei ole
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mysql-zrm-manage-backup: Kommando nicht gefunden.
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mysql-zrm-manage-backup: komut yok
mysql-zrm-manage-backup: nie znaleziono polecenia
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mysql-zrm-manage-backup: perintah tidak ditemukan
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mysql-zrm-manage-backup: командата не е открита
mysql-zrm-manage-backup: 命令找不到
mysql-zrm-manage-backup: コマンドが見つかりません