If you have a package that stops working, or if you
suspect that your system might have been tampered with, then the verify
option will compare the installed software versus its original software
package.
This has the -V option, as opposed to the -v (verbose)
option.
If everything is fine, then there is no output. If
there is a conflict, then you may see some indicators:
5 - MD5 Sum - An
MD5 ckecksum indicates a change to the file contents.
S - File size -
The number of characters in the file has changed.
L - Symlink -
The file has become a symbolic link to another file.
T - Mtime -
The modification time of the file has changed.
D - Device - The
file has become a device special file.
U - User -
The username that owns the file has changed.
G - Group -
The group assigned to the file has changed.
M - Mode - If
the ownership or permission of the file has changed.
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