(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'error='> name:error) op: assign_op.Equal rhs: {<no>} spids: [79] ) ] redirects: [] ) (C {<echo>} {(DQ <'## checking common configuration files'>)}) (command.WhileUntil keyword: <Id.KW_While while> cond: (condition.Shell commands:[(C {<read>} {<src>} {<dest>})]) body: (command.DoGroup children: [ (command.AndOr ops: [Id.Op_DAmp] children: [ (C {<Id.Lit_LBracket '['>} {(DQ ($ Id.VSub_DollarName src))} {<Id.Lit_Equals '='>} {<'/dev/null'>} {<Id.Lit_RBracket ']'>} ) (command.ControlFlow token:<Id.ControlFlow_Continue continue>) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (C {<Id.Lit_LBracket '['>} {<-f>} {(DQ ($ Id.VSub_DollarName dest))} {<Id.Lit_RBracket ']'>} ) ] ) action: [(C {<echo>} {($ Id.VSub_DollarName dest)} {<preserved>})] spids: [117 130] ) ] else_action: [ (C {<echo>} {($ Id.VSub_DollarName dest)}) (command.AndOr ops: [Id.Op_DPipe] children: [ (C {<cp>} {($ Id.VSub_DollarName src)} {($ Id.VSub_DollarName dest)}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'error='> name:error) op: assign_op.Equal rhs: {<yes>} spids: [156] ) ] redirects: [] ) ] ) ] redirects: [] ) ] ) redirects: [] ) (command.AndOr ops: [Id.Op_DAmp] children: [ (C {<Id.Lit_LBracket '['>} {(DQ ($ Id.VSub_DollarName error))} {<Id.Lit_Equals '='>} {<yes>} {<Id.Lit_RBracket ']'>} ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<2>}) ] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<0>}) ] )