One-liners: Difference between revisions

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==Compare two wikis for extensions and skins==

This one-liner invokes the API of two wikis asking for info on siteinfo, general, extensions and skins; in json format. Since that data is returned without any newlines, we use `jq` to pretty-print the json output. Then it's an easy `meld` or `diff` to compare them. The `--silent` option to `curl` just suppresses the connection and retrieval metadata; while the `-L` is customary to follow redirects.

This one-liner invokes the API of two wikis asking for info on siteinfo, general, extensions and skins; in json format. Since that data is returned without any newlines, we use `jq` to pretty-print the json output. Then it's an easy `meld` or `diff` to compare them. The `--silent` option to `curl` just suppresses the connection and retrieval metadata; while the `-L` is customary to follow redirects <cite>The wiki farm detection has changed (@fixme) on this site making it slightly different from mediawiki.org. Still, the one-liner should work but is failing silently whereas a manually executed substitution of <code>meld <(curl --silent -L "https://wiki.freephile.org/wiki/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json" | jq '.') <(curl --silent -L "https://www.mediawiki.org/w/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json" | jq '.')</code> does launch meld with the proper content.</cite>.

A='https://freephile.org/' B='https://www.mediawiki.org/' API='w/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json' meld <(curl --silent -L "${A}${API}" | jq '.') <(curl --silent -L "${B}${API}" | jq '.')</syntaxhighlight>

A='https://wiki.freephile.org/wiki' B='https://www.mediawiki.org/w' API='/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json' meld <(curl --silent -L "${A}${API}" | jq '.') <(curl --silent -L "${B}${API}" | jq '.')</syntaxhighlight>

==Perl edit==

@@ Line 30: / Line 30: @@
 ==Compare two wikis for extensions and skins==
-This one-liner invokes the API of two wikis asking for info on siteinfo, general, extensions and skins; in json format.  Since that data is returned without any newlines, we use `jq` to pretty-print the json output.  Then it's an easy `meld` or `diff` to compare them.  The `--silent` option to `curl` just suppresses the connection and retrieval metadata; while the `-L` is customary to follow redirects.
+This one-liner invokes the API of two wikis asking for info on siteinfo, general, extensions and skins; in json format.  Since that data is returned without any newlines, we use `jq` to pretty-print the json output.  Then it's an easy `meld` or `diff` to compare them.  The `--silent` option to `curl` just suppresses the connection and retrieval metadata; while the `-L` is customary to follow redirects <cite>The wiki farm detection has changed (@fixme) on this site making it slightly different from mediawiki.org. Still, the one-liner should work but is failing silently whereas a manually executed substitution of <code>meld <(curl --silent -L "https://wiki.freephile.org/wiki/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json" | jq '.') <(curl --silent -L "https://www.mediawiki.org/w/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json" | jq '.')</code> does launch meld with the proper content.</cite>.
 <syntaxhighlight lang="bash">
-A='https://freephile.org/' B='https://www.mediawiki.org/' API='w/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json' meld <(curl --silent -L "${A}${API}" | jq '.') <(curl --silent -L "${B}${API}" | jq '.')</syntaxhighlight>
+A='https://wiki.freephile.org/wiki' B='https://www.mediawiki.org/w' API='/api.php?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json' meld <(curl --silent -L "${A}${API}" | jq '.') <(curl --silent -L "${B}${API}" | jq '.')</syntaxhighlight>
 ==Perl edit==