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(command.Sentence child: (C {<rm>} {<-fr>} {<a>} {<d>}) terminator: <Id.Op_Semi _> ) (command.Sentence child:(C {<touch>} {<a>}) terminator:<Id.Op_Semi _>) (C {<mkdir>} {<d>}) (command.AndOr ops: [Id.Op_DPipe] children: [ (command.Simple words: [{($ Id.VSub_DollarName '$i')} {<'./a'>} {<a>} {<'d/'>}] redirects: [(redir op:<Id.Redir_DGreat '2>>'> loc:(redir_loc.Fd fd:2) arg:{<out>})] do_fork: T ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:fail) op: assign_op.Equal rhs: {<1>} spids: [167] ) ] ) ] ) (command.Sentence child: (C {<rm>} {<-fr>} {<a>} {<d>}) terminator: <Id.Op_Semi _> ) (command.Sentence child:(C {<touch>} {<a>}) terminator:<Id.Op_Semi _>) (C {<mkdir>} {<d>}) (command.AndOr ops: [Id.Op_DPipe] children: [ (command.Simple words: [ {($ Id.VSub_DollarName '$i')} {<--backup> <Id.Lit_Equals '='> <numbered>} {<a>} {<a>} {<'d/'>} ] redirects: [(redir op:<Id.Redir_DGreat '2>>'> loc:(redir_loc.Fd fd:2) arg:{<out>})] do_fork: T ) (command.ShAssignment pairs: 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once\n'> ($ Id.VSub_DollarName '$i') <': will not overwrite just-created \'d/a\' with \'a\'\n'> ] ) ) (redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<exp>}) ] do_fork: T ) (command.AndOr ops: [Id.Op_DPipe] children: [ (C {<compare>} {<exp>} {<out>}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:fail) op: assign_op.Equal rhs: {<1>} spids: [287] ) ] ) ] ) ] ) ) (command.ForEach iter_name: i iter_words: [{<mv>}] do_arg_iter: F body: (command.DoGroup children: [ (command.Sentence child: (C {<rm>} {<-fr>} {<a>} {<d>}) terminator: <Id.Op_Semi _> ) (command.Sentence child:(C {<touch>} {<a>}) terminator:<Id.Op_Semi _>) (C {<mkdir>} {<d>}) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.Simple words: [{($ Id.VSub_DollarName '$i')} {<a>} {<a>} {<'d/'>}] redirects: [(redir op:<Id.Redir_Great '2>'> loc:(redir_loc.Fd fd:2) arg:{<out>})] do_fork: T ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:fail) op: assign_op.Equal rhs: {<1>} spids: [343] ) ] ) ] ) (command.Sentence child: (C {<rm>} {<-fr>} {<a>} {<d>}) terminator: <Id.Op_Semi _> ) (command.Sentence child:(C {<touch>} {<a>}) terminator:<Id.Op_Semi _>) (C {<mkdir>} {<d>}) (command.AndOr ops: [Id.Op_DAmp] children: [ (command.Simple words: [{($ Id.VSub_DollarName '$i')} {<'./a'>} {<a>} {<'d/'>}] redirects: [(redir op:<Id.Redir_DGreat '2>>'> loc:(redir_loc.Fd fd:2) arg:{<out>})] do_fork: T ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:fail) op: assign_op.Equal rhs: {<1>} spids: [380] ) ] ) ] ) (command.Simple words: [{<cat>}] redirects: [ (redir op: <Id.Redir_DLess '<<'> loc: (redir_loc.Fd fd:0) arg: (redir_param.HereDoc here_begin: {<EOF>} here_end_span_id: 398 stdin_parts: [ ($ Id.VSub_DollarName '$i') <': cannot stat \'a\': No such file or directory\n'> ($ Id.VSub_DollarName '$i') <': cannot stat \'a\': No such file or directory\n'> ] ) ) (redir op:<Id.Redir_Great '>'> loc:(redir_loc.Fd fd:1) arg:{<exp>}) ] do_fork: T ) (command.AndOr ops: [Id.Op_DPipe] children: [ (C {<compare>} {<exp>} {<out>}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:fail) op: assign_op.Equal rhs: {<1>} spids: [408] ) ] ) ] ) ] ) ) (C {<Exit>} {($ Id.VSub_DollarName '$fail')}) ] )