Editing Comparison of operating systems (section)

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{{Use mdy dates|date=August 2021}}
These tables provide a '''comparison of operating systems''', of computer devices, as listing general and technical information for a number of widely used and currently available [[personal computer|PC]] or handheld (including [[smartphone]] and [[tablet computer]]) [[operating system]]s. The article "[[Usage share of operating systems]]" provides a broader, and more general, comparison of operating systems that includes [[Server (computing)|servers]], [[Mainframe computer|mainframes]] and [[supercomputer]]s.

Because of the large number and variety of available [[Linux distribution]]s, they are all grouped under a single entry; see [[comparison of Linux distributions]] for a detailed comparison. There is also a variety of BSD and DOS operating systems, covered in [[comparison of BSD operating systems]] and [[comparison of DOS operating systems]].
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| [http://secunia.com/product/<number>/ <number>] || <date>
Where <number> is any sequence of digits, and <date> is either '-' or a date in numeric format, i.e.
  [[<number>-<number>-<number>]]

while it should have the format
| [http://secunia.com/advisories/product/<PRODUCT_NUMBER>/ <NUMBER_OF_UNPATCHED_VULNERABILITIES_LISTED_AS_Extremely critical>]
| [http://secunia.com/advisories/product/<PRODUCT_NUMBER>/ <NUMBER_OF_UNPATCHED_VULNERABILITIES_LISTED_AS_Highly critical>]
| [http://secunia.com/advisories/product/<PRODUCT_NUMBER>/ <NUMBER_OF_UNPATCHED_VULNERABILITIES_LISTED_AS_Moderately critical>]
| [http://secunia.com/advisories/product/<PRODUCT_NUMBER>/ <NUMBER_OF_UNPATCHED_VULNERABILITIES_LISTED_AS_Less critical>]
| [http://secunia.com/advisories/product/<PRODUCT_NUMBER>/ <NUMBER_OF_UNPATCHED_VULNERABILITIES_LISTED_AS_Not critical>]{IF non-zero, then follow with oldest UNPATCHED_VULNERABILITY of this criticality}<br>[http://secunia.com/advisories/<VULNERABILITY_NUMBER>/ {{start date and age|<YYYY>|<MM>|<DD>|br=yes}}]
| [http://www.securityfocus.com/cgi-bin/index.cgi?c=12&op=display_list&vendor=<VENDOR_NAME>&title=<PRODUCT_TITLE>&version=<VERSION_NUMBER_AS_LISTED_IN_GENERAL_INFORMATION_LATEST_STABLE_VERSION_COLUMN> <NUMBER_OF_VULNERABILITIES>]<br>[http://www.securityfocus.com/bid/<VULNERABILITY_NUMBER> {{start date and age|<YYYY>|<MM>|<DD>|br=yes}}]

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