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Check if Linux File system is Read-Only

If you for some reason think your Linux File System is read-only. Donot trust on the mount command, as it will show you your FS in rw mode.

Following command will show you the Read-Only mounted File Systems:

 egrep " ro,|,ro " /proc/mounts

A File System can becom Read-Only if it has been away to lang for the OS. To prevent data Corruption, Linux makes it RO.