(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:retries) op: assign_op.Equal rhs: {(DQ <10>)} spids: [7] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:action) op: assign_op.Equal rhs: {(DQ <lock>)} spids: [15] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:nullcmd) op: assign_op.Equal rhs: {(DQ (command_sub left_token:<Id.Left_Backtick '`'> child:(C {<which>} {<true>})))} spids: [23] ) ] ) (command.WhileUntil keyword: <Id.KW_While while> cond: (condition.Shell commands: [ (command.Sentence child: (C {<getopts>} {(DQ <'lur:'>)} {<opt>}) terminator: <Id.Op_Semi _> ) ] ) body: (command.DoGroup children: [ (command.Case to_match: {($ Id.VSub_DollarName '$opt')} arms: [ (case_arm pat_list: [{<l>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:action) op: assign_op.Equal rhs: {(DQ <lock>)} spids: [63] ) ] ) ] spids: [59 61 68 -1] ) (case_arm pat_list: [{<u>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:action) op: assign_op.Equal rhs: {(DQ <unlock>)} spids: [75] ) ] ) ] spids: [71 73 80 -1] ) (case_arm pat_list: [{<r>}] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:retries) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_DollarName '$OPTARG'))} spids: [87] ) ] ) ] spids: [83 85 92 -1] ) ] ) ] ) ) (C {<shift>} { (word_part.ArithSub anode: (arith_expr.Binary op_id: Id.Arith_Minus left: {($ Id.VSub_DollarName '$OPTIND')} right: {<Id.Lit_Digits 1>} ) ) } ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {($ Id.VSub_Pound '$#')} {<-eq>} {<0>} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [{<cat>}] redirects: [ (redir op: <Id.Redir_DLess '<<'> loc: (redir_loc.Fd fd:0) arg: (redir_param.HereDoc here_begin: {<EOF>} here_end_span_id: 148 stdin_parts: [ <'Usage: '> ($ Id.VSub_Number '$0') <' [-l|-u] [-r retries] LOCKFILE\n'> <'Where -l requests a lock (the default), -u requests an unlock, -r X \n'> <'specifies a max number of retries before it fails (default = '> ($ Id.VSub_DollarName '$retries') <').\n'> ] ) ) (redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>}) ] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [111 125] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {<-z>} { (DQ (command_sub left_token: <Id.Left_DollarParen '$('> child: (command.Pipeline children: [(C {<which>} {<lockfile>}) (C {<grep>} {<-v>} {(SQ <'^no '>)})] negated: F ) ) ) } {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [ {<echo>} {(DQ ($ Id.VSub_Number '$0') <' failed: \'lockfile\' utility not found in PATH.'>)} ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [161 189] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {(DQ ($ Id.VSub_DollarName '$action'))} {<Id.Lit_Equals '='>} {(DQ <lock>)} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (command.Pipeline children: [ (command.Simple words: [ {<lockfile>} {<-1>} {<-r>} {($ Id.VSub_DollarName '$retries')} {(DQ ($ Id.VSub_Number '$1'))} ] redirects: [ (redir op: <Id.Redir_Great '2>'> loc: (redir_loc.Fd fd:2) arg: {<'/dev/null'>} ) ] do_fork: T ) ] negated: T ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [ {<echo>} {(DQ ($ Id.VSub_Number '$0') <': Failed: Couldn\'t create lockfile in time'>)} ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token: <Id.ControlFlow_Exit exit> arg_word: {<1>} ) ] spids: [230 251] ) ] ) ] spids: [209 227] ) ] else_action: [ (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {<Id.KW_Bang '!'>} {<-f>} {(DQ ($ Id.VSub_Number '$1'))} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] ) action: [ (command.Simple words: [ {<echo>} { (DQ ($ Id.VSub_Number '$0') <': Warning: lockfile '> ($ Id.VSub_Number '$1') <' doesn\'t exist to unlock'> ) } ] redirects: [(redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})] do_fork: T ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [278 294] ) ] ) (C {<rm>} {<-f>} {(DQ ($ Id.VSub_Number '$1'))}) ] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<0>}) ] )