I was going through the rewrite rules and saw this:
RewriteRule ^(.*)/$ $1 [R=permanant]
I checked Apache's RewriteRule Flags list, but cannot find any info there.
Is it an alias to 301?
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2 Answers
A more useful reference would be alongside the one you quoted, at https://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewriterule
RewriteRule ^(.*)/$ $1 [R=permanant]
There's an error in this line (permanent is misspelt), but assuming that's a typo in the question rather than in your Apache configuration, here's what the line says:
RewriteRule- it's a URL rewriting rule frommod_rewrite^(.*)/$- match the RE that describes anything at all, ending with/, and remember everything as$1except that trailing/$1- if found, prepare to use the match group we just found (i.e. the original URL without a trailing/)[R=permanent]- send a Redirect instruction to the web browser tagged as permanent, i.e. HTTP 301
In other words, as pointed out in a comment, it will redirect the web browser from any URL path on this server ending with a slash to one without.
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3Put more succinctly, it will redirect from e. g.
https://www.example.com/directory/tohttps://www.example.com/directory.DopeGhoti– DopeGhoti2024-07-03 08:20:35 +00:00Commented Jul 3, 2024 at 8:20 -
1@DopeGhoti thank you!Chris Davies– Chris Davies2024-07-03 11:44:22 +00:00Commented Jul 3, 2024 at 11:44
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@ChrisDavies "permanant" is an actual rewrite rule in our config (just started on the job and was going through the existing config)mrjayviper– mrjayviper2024-07-05 08:03:44 +00:00Commented Jul 5, 2024 at 8:03
In addition to Chris's answer, a full explanation of the following regular expression ^(.*)/$ $1:
^ is identified as the beginning of the string.
() used to create a capture group
(.*) This means match anything
$ This means the end of the string
$1 refers to the first capture in the group
when you combine them you will get capture matches for any URL that ends with a slash (/) then take the first one.
