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24 lines
1.2 KiB
24 lines
1.2 KiB
7 years ago
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diff -up yum-3.4.3/docs/yum.conf.5.orig yum-3.4.3/docs/yum.conf.5
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--- yum-3.4.3/docs/yum.conf.5.orig 2017-11-01 14:58:28.259740017 +0100
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+++ yum-3.4.3/docs/yum.conf.5 2017-11-01 14:58:48.528648100 +0100
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@@ -1356,8 +1356,17 @@ the same name. If the shell environment
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configuration file variable will not be replaced.
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.LP
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-As of 3.2.28, any file in /etc/yum/vars is turned into a variable named after
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-the filename (or overrides any of the above variables).
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+When variable names are parsed in a string, all alphanumeric characters and
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+underscores immediately following a $ sign are interpreted as part of a name.
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+If a variable is undefined, it will not be replaced.
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+For example, the strings $releasever-foo or $releasever/foo will be expanded
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+with the $releasever value accordingly, whereas $releaseverfoo or
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+$releasever_foo will not be expanded.
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+
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+As of 3.2.28, any properly named file in /etc/yum/vars is turned into
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+a variable named after the filename (or overrides any of the above variables).
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+Filenames may contain only alphanumeric characters and underscores
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+and be in lowercase.
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Note that no warnings/errors are given if the files are unreadable, so creating
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files that only root can read may be confusing for users.
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