(command.CommandList children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:file) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_Number '$1'))} spids: [75] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:epoch) op: assign_op.Equal rhs: {(DQ ($ Id.VSub_Number '$2'))} spids: [80] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.AndOr ops: [Id.Op_DPipe] children: [ (C {<Id.Lit_LBracket '['>} {<Id.KW_Bang '!'>} {<-f>} {(DQ ($ Id.VSub_DollarName '$file'))} {<Id.Lit_RBracket ']'>} ) (C {<Id.Lit_LBracket '['>} {($ Id.VSub_Pound '$#')} {<-ne>} {<1>} {<-a>} {($ Id.VSub_Pound '$#')} {<-ne>} {<2>} {<Id.Lit_RBracket ']'>} ) ] ) terminator: <Id.Op_Semi _> ) ] action: [ (command.Simple words: [ {<echo>} { (DQ <'Usage: '> (command_sub left_token: <Id.Left_Backtick '`'> command_list: (command.CommandList children: [(C {<basename>} {($ Id.VSub_Number '$0')})] ) ) <' file [epoch]'> ) } ] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [86 121] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {<Id.KW_Bang '!'>} {(DQ ($ Id.VSub_DollarName '$epoch'))} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] action: [ (command.AndOr ops: [Id.Op_DPipe] children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:epoch) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_Backtick '`'> command_list: (command.CommandList children: [ (C {<date>} {<--reference> <Id.Lit_Equals '='> (DQ ($ Id.VSub_DollarName '$file')) } {<Id.Lit_Other '+'> <Id.Lit_Other '%'> <s.> <Id.Lit_Other '%'> <N>} ) ] ) ) } spids: [165] ) ] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] ) ] spids: [149 162] ) ] else_action: [ (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [ (C {<echo>} {(DQ ($ Id.VSub_DollarName '$epoch'))}) (C {<grep>} {<-Eq>} {(DQ <'^['> <Id.Lit_Other '\\'> <'+-]'>)}) ] negated: F ) terminator: <Id.Op_Semi _> ) ] action: [ (command.Simple words: [{<echo>} {(DQ <'Epochs with leading +/- are ambiguous with editor options'>)}] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [193 214] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [ (command.Simple words: [ {<date>} {<--date> <Id.Lit_Equals '='> (DQ <'1970-01-01 UTC '> ($ Id.VSub_DollarName '$epoch') <' seconds'>) } ] redirects: [ (redir.Redir op: <Id.Redir_Great '>'> fd: -1 arg_word: {</dev/null>} ) (redir.Redir op: <Id.Redir_GreatAnd '2>&'> fd: 2 arg_word: {<1>} ) ] ) ] negated: T ) terminator: <Id.Op_Semi _> ) ] action: [ (command.Simple words: [ {<echo>} {(DQ <'Invalid epoch specified ['> ($ Id.VSub_DollarName '$epoch') <']'>)} ] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) (command.ControlFlow token:<Id.ControlFlow_Exit exit> arg_word:{<1>}) ] spids: [235 256] ) ] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [ (C {<echo>} {(DQ ($ Id.VSub_DollarName '$epoch'))}) (C {<grep>} {<-Fq>} {(DQ <.>)}) ] negated: F ) terminator: <Id.Op_Semi _> ) ] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:seconds) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_Backtick '`'> command_list: (command.CommandList children: [ (command.Pipeline children: [ (C {<echo>} {($ Id.VSub_DollarName '$epoch')}) (C {<cut>} {<-d.>} {<-f1>}) ] negated: F ) ] ) ) } spids: [306] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (command.Pipeline children: [ (C {<echo>} {($ Id.VSub_DollarName '$epoch')}) (C {<grep>} {<-Eq>} {(DQ <Id.Lit_Other '\\'> <'.0+'> <Id.Lit_Other '$'>)}) ] negated: F ) terminator: <Id.Op_Semi _> ) ] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:epoch) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$seconds')} spids: [349] ) ] ) ] spids: [324 343] ) ] else_action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:checkns) op: assign_op.Equal rhs: {(DQ <true>)} spids: [359] ) ] ) ] ) ] spids: [281 300] ) ] ) (C { (braced_var_sub token: <Id.VSub_Name EDITOR> suffix_op: (suffix_op.Unary op_id:Id.VTest_ColonHyphen arg_word:{<vim>}) ) } {(DQ ($ Id.VSub_DollarName '$file'))} ) (command.AndOr ops: [Id.Op_DAmp Id.Op_DPipe] children: [ (C {<Id.Lit_LBracket '['>} {<Id.KW_Bang '!'>} {(DQ ($ Id.VSub_DollarName '$seconds'))} {<Id.Lit_RBracket ']'>} ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:err) op: assign_op.Equal rhs: {(DQ </dev/tty>)} spids: [394] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:err) op: assign_op.Equal rhs: {(DQ </dev/null>)} spids: [401] ) ] ) ] ) (command.Simple words: [ {<touch>} {(DQ ($ Id.VSub_DollarName '$file'))} {<--date> <Id.Lit_Equals '='> (DQ <'1970-01-01 UTC '> ($ Id.VSub_DollarName '$epoch') <' seconds'>) } ] redirects: [(redir.Redir op:<Id.Redir_Great '2>'> fd:2 arg_word:{($ Id.VSub_DollarName '$err')})] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {($ Id.VSub_QMark '$?')} {<-ne>} {<0>} {<-a>} {(DQ ($ Id.VSub_DollarName '$seconds'))} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] action: [ (command.AndOr ops: [Id.Op_DAmp] children: [ (C {<touch>} {(DQ ($ Id.VSub_DollarName '$file'))} {<--date> <Id.Lit_Equals '='> (DQ <'1970-01-01 UTC '> ($ Id.VSub_DollarName '$seconds') <' seconds'>) } ) (command.Simple words: [{<echo>} {(DQ <'Warning: sub second portion of timestamp ignored'>)}] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) ] ) ] spids: [423 442] ) ] else_action: [ (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {(DQ ($ Id.VSub_DollarName '$checkns'))} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] action: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:new_ts) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_Backtick '`'> command_list: (command.CommandList children: [ (C {<date>} {<--reference> <Id.Lit_Equals '='> (DQ ($ Id.VSub_DollarName '$file')) } {<Id.Lit_Other '+'> <Id.Lit_Other '%'> <s.> <Id.Lit_Other '%'> <N>} ) ] ) ) } spids: [491] ) ] ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:diff) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_Backtick '`'> command_list: (command.CommandList children: [ (command.Pipeline children: [ (C {<echo>} { (DQ <'(('> ($ Id.VSub_DollarName '$epoch') <-> ($ Id.VSub_DollarName '$new_ts') <')*10^9)/1'> ) } ) (C {<bc>}) ] negated: F ) ] ) ) } spids: [511] ) ] ) (command.If arms: [ (if_arm cond: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {($ Id.VSub_DollarName '$diff')} {<-ne>} {<0>} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] action: [ (command.Simple words: [ {<echo>} {(DQ <'Warning: timestamp set '> (${ Id.VSub_Name diff) <'ns backwards'>)} ] redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})] ) ] spids: [531 544] ) ] ) ] spids: [477 488] ) ] ) ] ) ] )