Find rpm Packages path using mounted CentOS iso path.

[ihsin]

For e.g we should assign RPM_REPO variable to:
[root@cp01 CentOS 7 x86_64]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 471M 0 471M 0% /dev
tmpfs 487M 0 487M 0% /dev/shm
tmpfs 487M 8.5M 478M 2% /run
tmpfs 487M 0 487M 0% /sys/fs/cgroup
/dev/sda3 18G 4.2G 14G 24% /
/dev/sda1 297M 152M 145M 52% /boot
tmpfs 98M 32K 98M 1% /run/user/0
/dev/sr0 575M 575M 0 100% /run/media/root/CentOS 7 x86_64

[ihsin]

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