In computing, an inode is a data structure on a traditional Unix-style file system such as UFS. An inode stores basic information about a regular file, directory, or other file system object.
Now in linux you want to check the inode of a file, so the command to find inode of a file is:
root@server # ls -li test.php
426137 -rw-r–r– 1 root root 0 May 05 03:14 test.php
Here, 426137 is the inode of the file test.php
Isn’t it easy?
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Definition source: en.wikipedia.org/wiki/Inode



