(command.CommandList children: [ (C {<nginx>} {(DQ ($ Id.VSub_At '$@'))}) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:oldcksum) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_Backtick '`'> child: (C {<cksum>} {<'/etc/nginx/conf.d/default.conf'>}) ) } spids: [50] ) ] ) (command.Pipeline children: [ (C {<inotifywait>} {<-e>} {<modify> <Id.Lit_Comma ','> <move> <Id.Lit_Comma ','> <create> <Id.Lit_Comma ','> <delete>} {<-mr>} {<--timefmt>} {(SQ <'%d/%m/%y %H:%M'>)} {<--format>} {(SQ <'%T'>)} {<'/etc/nginx/conf.d/'>} ) (command.WhileUntil keyword: <Id.KW_While while> cond: (condition.Shell commands: [ (command.Sentence child: (C {<read>} {<date>} {<Id.KW_Time time>}) terminator: <Id.Op_Semi _> ) ] ) body: (command.DoGroup children: [ (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:newcksum) op: assign_op.Equal rhs: { (command_sub left_token: <Id.Left_Backtick '`'> child: (C {<cksum>} {<'/etc/nginx/conf.d/default.conf'>}) ) } spids: [104] ) ] ) (command.If arms: [ (if_arm cond: (condition.Shell commands: [ (command.Sentence child: (C {<Id.Lit_LBracket '['>} {(DQ ($ Id.VSub_DollarName '$newcksum'))} {<Id.KW_Bang '!'> <Id.Lit_Equals '='>} {(DQ ($ Id.VSub_DollarName '$oldcksum'))} {<Id.Lit_RBracket ']'>} ) terminator: <Id.Op_Semi _> ) ] ) action: [ (C {<echo>} { (DQ <'At '> (${ Id.VSub_Name time) <' on '> (${ Id.VSub_Name date) <', config file update detected.'> ) } ) (command.ShAssignment pairs: [ (assign_pair lhs: (sh_lhs_expr.Name name:oldcksum) op: assign_op.Equal rhs: {($ Id.VSub_DollarName '$newcksum')} spids: [150] ) ] ) (C {<nginx>} {<-s>} {<reload>}) ] spids: [114 132] ) ] ) ] ) ) ] negated: F ) ] )