pyenv/libexec/rbenv-help

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#!/usr/bin/env bash -e
print_set_version() {
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echo "<version> should be a string matching a Ruby version known by rbenv."
local versions="$(rbenv-versions --bare)"
if [ -z "$versions" ]; then
echo "There are currently no Ruby versions installed for rbenv."
else
echo "The currently installed Ruby versions are:"
echo "$versions" | sed 's/^/ /'
fi
echo
echo "The special version string 'system' will use your default system Ruby."
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}
case "$1" in
"") echo "usage: rbenv <command> [<args>]
Some useful rbenv commands are:
commands List all commands
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rehash Rehash rbenv shims (run this after installing binaries)
set-default Set the default Ruby version
set-local Set a local directory-specific Ruby version
version Show the current Ruby version
versions List all Ruby versions known by rbenv
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See 'rbenv help <command>' for more information on a specific command.
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For more information, see: https://github.com/sstephenson/rbenv#readme"
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;;
set-default) echo "usage: rbenv set-default <version>
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Sets the default Ruby version. You can override the default at any time
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by setting a directory-specific version with \`rbenv set-local' or by
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setting the RBENV_VERSION environment variable.
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$(print_set_version)"
;;
set-local) echo "usage: rbenv set-local <version>
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Sets the local directory-specific Ruby version by writing the version
name to a file named '.rbenv-version'.
When you run a Ruby command, rbenv will look for an '.rbenv-version'
file in the current directory and each parent directory. If no such
file is found in the tree, rbenv will use the default Ruby version
specified with \`rbenv set-default', or the version specified in the
RBENV_VERSION environment variable.
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$(print_set_version)"
;;
*) echo "No command arguments needed or invalid/undocumented command."
esac