class Facter::Core::Execution::Posix
Constants
- ABSOLUTE_PATH_REGEX
- DEFAULT_SEARCH_PATHS
- DOUBLE_QUOTED_COMMAND
- SINGLE_QUOTED_COMMAND
Public Instance Methods
absolute_path?(path)
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# File lib/facter/core/execution/posix.rb, line 26 def absolute_path?(path) !! (path =~ ABSOLUTE_PATH_REGEX) end
expand_command(command)
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# File lib/facter/core/execution/posix.rb, line 33 def expand_command(command) exe = nil args = nil if (match = (command.match(DOUBLE_QUOTED_COMMAND) || command.match(SINGLE_QUOTED_COMMAND))) exe, args = match.captures else exe, args = command.split(/ /,2) end if exe and (expanded = which(exe)) expanded = "'#{expanded}'" if expanded.match(/\s/) expanded << " #{args}" if args return expanded end end
search_paths()
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# File lib/facter/core/execution/posix.rb, line 5 def search_paths # Make sure facter is usable even for non-root users. Most commands # in /sbin (like ifconfig) can be run as non privileged users as # long as they do not modify anything - which we do not do with facter ENV['PATH'].split(File::PATH_SEPARATOR) + DEFAULT_SEARCH_PATHS end
which(bin)
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# File lib/facter/core/execution/posix.rb, line 12 def which(bin) if absolute_path?(bin) return bin if File.executable?(bin) else search_paths.each do |dir| dest = File.join(dir, bin) return dest if File.executable?(dest) end end nil end