How to use Close method of executor Package

Best K6 code snippet using executor.Close

executor_test.go

Source:executor_test.go Github

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...123 if result.Err != query.ErrQueryInterrupted {124 t.Errorf("unexpected error: %s", result.Err)125 }126}127func TestQueryExecutor_KillQuery_CloseTaskManager(t *testing.T) {128 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)129 if err != nil {130 t.Fatal(err)131 }132 qid := make(chan uint64)133 // Open a channel to stall the statement executor forever. This keeps the statement executor134 // running even after we kill the query which can happen with some queries. We only close it once135 // the test has finished running.136 done := make(chan struct{})137 defer close(done)138 e := NewQueryExecutor()139 e.StatementExecutor = &StatementExecutor{140 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {141 switch stmt.(type) {142 case *influxql.KillQueryStatement, *influxql.ShowQueriesStatement:143 return e.TaskManager.ExecuteStatement(stmt, ctx)144 }145 qid <- ctx.QueryID146 <-done147 return nil148 },149 }150 // Kill the query. This should switch it into a zombie state.151 go discardOutput(e.ExecuteQuery(q, query.ExecutionOptions{}, nil))152 q, err = influxql.ParseQuery(fmt.Sprintf("KILL QUERY %d", <-qid))153 if err != nil {154 t.Fatal(err)155 }156 discardOutput(e.ExecuteQuery(q, query.ExecutionOptions{}, nil))157 // Display the queries and ensure that the original is still in there.158 q, err = influxql.ParseQuery("SHOW QUERIES")159 if err != nil {160 t.Fatal(err)161 }162 tasks := e.ExecuteQuery(q, query.ExecutionOptions{}, nil)163 // The killed query should still be there.164 task := <-tasks165 if len(task.Series) != 1 {166 t.Errorf("expected %d series, got %d", 1, len(task.Series))167 } else if len(task.Series[0].Values) != 2 {168 t.Errorf("expected %d rows, got %d", 2, len(task.Series[0].Values))169 }170 // Close the task manager to ensure it doesn't cause a panic.171 if err := e.TaskManager.Close(); err != nil {172 t.Errorf("unexpected error: %s", err)173 }174}175func TestQueryExecutor_KillQuery_AlreadyKilled(t *testing.T) {176 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)177 if err != nil {178 t.Fatal(err)179 }180 qid := make(chan uint64)181 // Open a channel to stall the statement executor forever. This keeps the statement executor182 // running even after we kill the query which can happen with some queries. We only close it once183 // the test has finished running.184 done := make(chan struct{})185 defer close(done)186 e := NewQueryExecutor()187 e.StatementExecutor = &StatementExecutor{188 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {189 switch stmt.(type) {190 case *influxql.KillQueryStatement, *influxql.ShowQueriesStatement:191 return e.TaskManager.ExecuteStatement(stmt, ctx)192 }193 qid <- ctx.QueryID194 <-done195 return nil196 },197 }198 // Kill the query. This should switch it into a zombie state.199 go discardOutput(e.ExecuteQuery(q, query.ExecutionOptions{}, nil))200 q, err = influxql.ParseQuery(fmt.Sprintf("KILL QUERY %d", <-qid))201 if err != nil {202 t.Fatal(err)203 }204 discardOutput(e.ExecuteQuery(q, query.ExecutionOptions{}, nil))205 // Now attempt to kill it again. We should get an error.206 results := e.ExecuteQuery(q, query.ExecutionOptions{}, nil)207 result := <-results208 if got, want := result.Err, query.ErrAlreadyKilled; got != want {209 t.Errorf("unexpected error: got=%v want=%v", got, want)210 }211}212func TestQueryExecutor_Interrupt(t *testing.T) {213 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)214 if err != nil {215 t.Fatal(err)216 }217 e := NewQueryExecutor()218 e.StatementExecutor = &StatementExecutor{219 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {220 select {221 case <-ctx.Done():222 return ctx.Err()223 case <-time.After(100 * time.Millisecond):224 t.Error("killing the query did not close the channel after 100 milliseconds")225 return errUnexpected226 }227 },228 }229 closing := make(chan struct{})230 results := e.ExecuteQuery(q, query.ExecutionOptions{}, closing)231 close(closing)232 result := <-results233 if result.Err != query.ErrQueryInterrupted {234 t.Errorf("unexpected error: %s", result.Err)235 }236}237func TestQueryExecutor_Abort(t *testing.T) {238 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)239 if err != nil {240 t.Fatal(err)241 }242 ch1 := make(chan struct{})243 ch2 := make(chan struct{})244 e := NewQueryExecutor()245 e.StatementExecutor = &StatementExecutor{246 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {247 <-ch1248 if err := ctx.Send(&query.Result{Err: errUnexpected}); err != query.ErrQueryAborted {249 t.Errorf("unexpected error: %v", err)250 }251 close(ch2)252 return nil253 },254 }255 done := make(chan struct{})256 close(done)257 results := e.ExecuteQuery(q, query.ExecutionOptions{AbortCh: done}, nil)258 close(ch1)259 <-ch2260 discardOutput(results)261}262func TestQueryExecutor_ShowQueries(t *testing.T) {263 e := NewQueryExecutor()264 e.StatementExecutor = &StatementExecutor{265 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {266 switch stmt.(type) {267 case *influxql.ShowQueriesStatement:268 return e.TaskManager.ExecuteStatement(stmt, ctx)269 }270 t.Errorf("unexpected statement: %s", stmt)271 return errUnexpected272 },273 }274 q, err := influxql.ParseQuery(`SHOW QUERIES`)275 if err != nil {276 t.Fatal(err)277 }278 results := e.ExecuteQuery(q, query.ExecutionOptions{}, nil)279 result := <-results280 if len(result.Series) != 1 {281 t.Errorf("expected %d series, got %d", 1, len(result.Series))282 } else if len(result.Series[0].Values) != 1 {283 t.Errorf("expected %d row, got %d", 1, len(result.Series[0].Values))284 }285 if result.Err != nil {286 t.Errorf("unexpected error: %s", result.Err)287 }288}289func TestQueryExecutor_Limit_Timeout(t *testing.T) {290 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)291 if err != nil {292 t.Fatal(err)293 }294 e := NewQueryExecutor()295 e.StatementExecutor = &StatementExecutor{296 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {297 select {298 case <-ctx.Done():299 return ctx.Err()300 case <-time.After(time.Second):301 t.Errorf("timeout has not killed the query")302 return errUnexpected303 }304 },305 }306 e.TaskManager.QueryTimeout = time.Nanosecond307 results := e.ExecuteQuery(q, query.ExecutionOptions{}, nil)308 result := <-results309 if result.Err == nil || !strings.Contains(result.Err.Error(), "query-timeout") {310 t.Errorf("unexpected error: %s", result.Err)311 }312}313func TestQueryExecutor_Limit_ConcurrentQueries(t *testing.T) {314 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)315 if err != nil {316 t.Fatal(err)317 }318 qid := make(chan uint64)319 e := NewQueryExecutor()320 e.StatementExecutor = &StatementExecutor{321 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {322 qid <- ctx.QueryID323 <-ctx.Done()324 return ctx.Err()325 },326 }327 e.TaskManager.MaxConcurrentQueries = 1328 defer e.Close()329 // Start first query and wait for it to be executing.330 go discardOutput(e.ExecuteQuery(q, query.ExecutionOptions{}, nil))331 <-qid332 // Start second query and expect for it to fail.333 results := e.ExecuteQuery(q, query.ExecutionOptions{}, nil)334 select {335 case result := <-results:336 if len(result.Series) != 0 {337 t.Errorf("expected %d rows, got %d", 0, len(result.Series))338 }339 if result.Err == nil || !strings.Contains(result.Err.Error(), "max-concurrent-queries") {340 t.Errorf("unexpected error: %s", result.Err)341 }342 case <-qid:343 t.Errorf("unexpected statement execution for the second query")344 }345}346func TestQueryExecutor_Close(t *testing.T) {347 q, err := influxql.ParseQuery(`SELECT count(value) FROM cpu`)348 if err != nil {349 t.Fatal(err)350 }351 ch1 := make(chan struct{})352 ch2 := make(chan struct{})353 e := NewQueryExecutor()354 e.StatementExecutor = &StatementExecutor{355 ExecuteStatementFn: func(stmt influxql.Statement, ctx *query.ExecutionContext) error {356 close(ch1)357 <-ctx.Done()358 return ctx.Err()359 },360 }361 results := e.ExecuteQuery(q, query.ExecutionOptions{}, nil)362 go func(results <-chan *query.Result) {363 result := <-results364 if result.Err != query.ErrQueryEngineShutdown {365 t.Errorf("unexpected error: %s", result.Err)366 }367 close(ch2)368 }(results)369 // Wait for the statement to start executing.370 <-ch1371 // Close the query executor.372 e.Close()373 // Check that the statement gets interrupted and finishes.374 select {375 case <-ch2:376 case <-time.After(100 * time.Millisecond):377 t.Fatal("closing the query manager did not kill the query after 100 milliseconds")378 }379 results = e.ExecuteQuery(q, query.ExecutionOptions{}, nil)380 result := <-results381 if len(result.Series) != 0 {382 t.Errorf("expected %d rows, got %d", 0, len(result.Series))383 }384 if result.Err != query.ErrQueryEngineShutdown {385 t.Errorf("unexpected error: %s", result.Err)386 }...

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executor.go

Source:executor.go Github

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...93 if s.dbTx != nil {94 panic("dbTx isn't nil")95 }96 if s.rowsHandle != nil {97 s.rowsHandle.Close()98 }99 s.rowsHandle = nil100 if s.pool == nil {101 if s.dbHandle != nil {102 //log.Print("close database connection...")103 s.dbHandle.Close()104 }105 s.dbHandle = nil106 return107 }108 s.pool.putIn(s)109}110func (s *Executor) destroy() {111 if s.dbHandle != nil {112 s.dbHandle.Close()113 }114}115func (s *Executor) idle() bool {116 return time.Now().Sub(s.finishTime) > 10*time.Minute117}118// BeginTransaction Begin Transaction119func (s *Executor) BeginTransaction() (err error) {120 atomic.AddInt32(&s.dbTxCount, 1)121 if s.dbTx == nil && s.dbTxCount == 1 {122 if s.rowsHandle != nil {123 s.rowsHandle.Close()124 }125 s.rowsHandle = nil126 tx, txErr := s.dbHandle.Begin()127 if txErr != nil {128 err = txErr129 log.Printf("begin transaction failed, err:%s", err.Error())130 return131 }132 s.dbTx = tx133 //log.Print("BeginTransaction")134 }135 return136}137// CommitTransaction Commit Transaction138func (s *Executor) CommitTransaction() (err error) {139 atomic.AddInt32(&s.dbTxCount, -1)140 if s.dbTx != nil && s.dbTxCount == 0 {141 err = s.dbTx.Commit()142 if err != nil {143 s.dbTx = nil144 log.Printf("commit transaction failed, err:%s", err.Error())145 return146 }147 s.dbTx = nil148 //log.Print("Commit")149 }150 return151}152// RollbackTransaction Rollback Transaction153func (s *Executor) RollbackTransaction() (err error) {154 atomic.AddInt32(&s.dbTxCount, -1)155 if s.dbTx != nil && s.dbTxCount == 0 {156 err = s.dbTx.Rollback()157 if err != nil {158 s.dbTx = nil159 log.Printf("rollback transaction failed, err:%s", err.Error())160 return161 }162 s.dbTx = nil163 //log.Print("Rollback")164 }165 return166}167// Query Query168func (s *Executor) Query(sql string) (err error) {169 //log.Printf("Query, sql:%s", sql)170 if s.dbTx == nil {171 if s.dbHandle == nil {172 panic("dbHanlde is nil")173 }174 if s.rowsHandle != nil {175 s.rowsHandle.Close()176 s.rowsHandle = nil177 }178 rows, rowErr := s.dbHandle.Query(sql)179 if rowErr != nil {180 err = rowErr181 log.Printf("query failed, sql:%s, err:%s", sql, err.Error())182 return183 }184 s.rowsHandle = rows185 } else {186 if s.rowsHandle != nil {187 s.rowsHandle.Close()188 s.rowsHandle = nil189 }190 rows, rowErr := s.dbTx.Query(sql)191 if rowErr != nil {192 err = rowErr193 log.Printf("query failed, sql:%s, err:%s", sql, err.Error())194 return195 }196 s.rowsHandle = rows197 }198 return199}200// Next Next201func (s *Executor) Next() bool {202 if s.rowsHandle == nil {203 panic("rowsHandle is nil")204 }205 ret := s.rowsHandle.Next()206 if !ret {207 //log.Print("Next, close rows")208 s.rowsHandle.Close()209 s.rowsHandle = nil210 }211 return ret212}213// Finish Finish214func (s *Executor) Finish() {215 if s.rowsHandle != nil {216 s.rowsHandle.Close()217 s.rowsHandle = nil218 }219}220// GetField GetField221func (s *Executor) GetField(value ...interface{}) (err error) {222 if s.rowsHandle == nil {223 panic("rowsHandle is nil")224 }225 err = s.rowsHandle.Scan(value...)226 if err != nil {227 log.Printf("scan failed, err:%s", err.Error())228 }229 return230}231// Insert Insert232func (s *Executor) Insert(sql string) (ret int64, err error) {233 if s.rowsHandle != nil {234 s.rowsHandle.Close()235 }236 s.rowsHandle = nil237 if s.dbTx == nil {238 if s.dbHandle == nil {239 panic("dbHandle is nil")240 }241 result, resultErr := s.dbHandle.Exec(sql)242 if resultErr != nil {243 err = resultErr244 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())245 return246 }247 idNum, idErr := result.LastInsertId()248 if idErr != nil {249 err = idErr250 log.Printf("get lastInsertId failed, sql:%s, err:%s", sql, err.Error())251 return252 }253 ret = idNum254 return255 }256 result, resultErr := s.dbTx.Exec(sql)257 if resultErr != nil {258 err = resultErr259 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())260 return261 }262 idNum, idErr := result.LastInsertId()263 if idErr != nil {264 err = idErr265 log.Printf("get lastInsertId failed, sql:%s, err:%s", sql, err.Error())266 return267 }268 ret = idNum269 return270}271// Update Update272func (s *Executor) Update(sql string) (ret int64, err error) {273 if s.rowsHandle != nil {274 s.rowsHandle.Close()275 }276 s.rowsHandle = nil277 if s.dbTx == nil {278 if s.dbHandle == nil {279 panic("dbHandle is nil")280 }281 result, resultErr := s.dbHandle.Exec(sql)282 if resultErr != nil {283 err = resultErr284 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())285 return286 }287 num, numErr := result.RowsAffected()288 if numErr != nil {289 err = numErr290 log.Printf("get affected rows number failed, sql:%s, err:%s", sql, err.Error())291 }292 ret = num293 return294 }295 result, resultErr := s.dbTx.Exec(sql)296 if resultErr != nil {297 err = resultErr298 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())299 return300 }301 num, numErr := result.RowsAffected()302 if numErr != nil {303 err = numErr304 log.Printf("get affected rows number failed, sql:%s, err:%s", sql, err.Error())305 return306 }307 ret = num308 return309}310// Delete Delete311func (s *Executor) Delete(sql string) (ret int64, err error) {312 if s.rowsHandle != nil {313 s.rowsHandle.Close()314 }315 s.rowsHandle = nil316 if s.dbTx == nil {317 if s.dbHandle == nil {318 panic("dbHandle is nil")319 }320 result, resultErr := s.dbHandle.Exec(sql)321 if resultErr != nil {322 err = resultErr323 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())324 return325 }326 num, numErr := result.RowsAffected()327 if numErr != nil {328 err = numErr329 log.Printf("get affected rows number failed, sql:%s, err:%s", sql, err.Error())330 return331 }332 ret = num333 return334 }335 result, resultErr := s.dbTx.Exec(sql)336 if resultErr != nil {337 err = resultErr338 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())339 return340 }341 num, numErr := result.RowsAffected()342 if numErr != nil {343 err = numErr344 log.Printf("get affected rows number failed, sql:%s, err:%s", sql, err.Error())345 return346 }347 ret = num348 return349}350// Execute Execute351func (s *Executor) Execute(sql string) (ret int64, err error) {352 if s.rowsHandle != nil {353 s.rowsHandle.Close()354 }355 s.rowsHandle = nil356 if s.dbTx == nil {357 if s.dbHandle == nil {358 panic("dbHandle is nil")359 }360 result, resultErr := s.dbHandle.Exec(sql)361 if resultErr != nil {362 err = resultErr363 log.Printf("exec failed, sql:%s, err:%s", sql, err.Error())364 return365 }366 num, numErr := result.RowsAffected()367 if numErr != nil {...

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Close

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1import (2func main() {3 cmd := exec.Command("ls", "-la")4 stdout, err := cmd.StdoutPipe()5 if err != nil {6 fmt.Println(err)7 os.Exit(1)8 }9 if err := cmd.Start(); err != nil {10 fmt.Println(err)11 os.Exit(1)12 }13 buf := make([]byte, 1024)14 for {15 n, err := stdout.Read(buf)16 if err != nil {17 }18 fmt.Print(string(buf[:n]))19 }20 if err := cmd.Wait(); err != nil {21 fmt.Println(err)22 os.Exit(1)23 }24}25import (26func main() {27 cmd := exec.Command("go", "build")28 stderr, err := cmd.StderrPipe()29 if err != nil {30 fmt.Println(err)31 os.Exit(1)32 }33 if err := cmd.Start(); err != nil {34 fmt.Println(err)35 os.Exit(1)36 }37 buf := make([]byte, 1024)38 for {39 n, err := stderr.Read(buf)40 if err != nil {41 }42 fmt.Print(string(buf[:n]))43 }44 if err := cmd.Wait(); err != nil {45 fmt.Println(err)46 os.Exit(1)47 }48}49 /usr/local/go/src/pkg/fmt (from $GOR

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Close

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1import (2type User struct {3 Name string `orm:"size(100)"`4}5func init() {6 orm.RegisterDataBase("default", "mysql", "root:root@/test?charset=utf8", 30)7 orm.RegisterModel(new(User))8 orm.RunSyncdb("default", false, true)9}10func main() {11 o := orm.NewOrm()12 user := User{Name: "slene"}13 id, err := o.Insert(&user)14 fmt.Printf("ID: %d, ERR: %v15 num, err := o.Update(&user)16 fmt.Printf("NUM: %d, ERR: %v17 u := User{Id: user.Id}18 err = o.Read(&u)19 fmt.Printf("ERR: %v20 num, err = o.Delete(&u)21 fmt.Printf("NUM: %d, ERR: %v22}23import (24type User struct {25 Name string `orm:"size(100)"`26}27func init() {28 orm.RegisterDataBase("default", "mysql", "root:root@/test?charset=utf8", 30)29 orm.RegisterModel(new(User))30 orm.RunSyncdb("default", false, true)31}32func main() {33 o := orm.NewOrm()34 user := User{Name: "slene"}35 id, err := o.Insert(&user)36 fmt.Printf("ID: %d, ERR: %v37 num, err := o.Update(&user

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Close

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1import (2func main() {3 cmd := exec.Command("ls", "-l")4 err := cmd.Start()5 if err != nil {6 fmt.Println(err)7 os.Exit(1)8 }9 fmt.Println("Waiting for command to finish...")10 err = cmd.Wait()11 fmt.Println("Command finished with error: %v", err)12}13import (14func main() {15 cmd := exec.Command("ls", "-l")16 err := cmd.Start()17 if err != nil {18 fmt.Println(err)19 os.Exit(1)20 }21 fmt.Println("Waiting for command to finish...")22 err = cmd.Wait()23 fmt.Println("Command finished with error: %v", err)24}25import (26func main() {27 cmd := exec.Command("ls", "-l")28 err := cmd.Run()29 if err != nil {30 fmt.Println(err)31 os.Exit(1)32 }33 fmt.Println("Command finished with error: %v", err)34}35import (36func main() {37 cmd := exec.Command("ls", "-l")38 output, err := cmd.Output()39 if err != nil {40 fmt.Println(err)41 os.Exit(1)42 }43 fmt.Println("Command finished with error: %v", err)44 fmt.Printf("Output: %s", output)45}46import (47func main() {48 cmd := exec.Command("ls", "-l")49 output, err := cmd.CombinedOutput()50 if err != nil {51 fmt.Println(err

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Close

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1import "fmt"2func main() {3e := executor.New()4e.Close()5fmt.Println("Closed")6}7import "fmt"8func main() {9e := executor.New()10e.Close()11fmt.Println("Closed")12}13import "fmt"14func main() {15e := executor.New()16e.Close()17fmt.Println("Closed")18}19import "fmt"20func main() {21e := executor.New()22e.Close()23fmt.Println("Closed")24}25import "fmt"26func main() {27e := executor.New()28e.Close()29fmt.Println("Closed")30}31import "fmt"32func main() {33e := executor.New()34e.Close()35fmt.Println("Closed")36}37import "fmt"38func main() {39e := executor.New()40e.Close()41fmt.Println("Closed")42}43import "fmt"44func main() {45e := executor.New()46e.Close()47fmt.Println("Closed")48}49import "fmt"50func main() {51e := executor.New()52e.Close()53fmt.Println("Closed")54}55import "fmt"56func main() {57e := executor.New()58e.Close()59fmt.Println("Closed")60}61import "fmt"62func main() {63e := executor.New()64e.Close()65fmt.Println("Closed")66}67import "fmt"68func main() {69e := executor.New()70e.Close()71fmt.Println("Closed")72}

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1import (2func main() {3 fmt.Println("Hello World!")4 executor := newExecutor()5 executor.Execute()6 executor.Close()7}8import (9func main() {10 fmt.Println("Hello World!")11 executor := newExecutor()12 executor.Execute()13 executor.Close()14}15main.(*executor).Close(0xc00007e5a0)16main.main()17import (18type executor struct {19}20func newExecutor() *executor {21 return &executor{}22}23func (e *executor) Execute() {24 e.wg.Add(1)25 go func() {26 defer e.wg.Done()27 fmt.Println("Executing task...")28 }()29}30func (e *executor) Close() {31 e.wg.Wait()32}33func main() {34 fmt.Println("Hello World!")35 executor := newExecutor()36 executor.Execute()37 executor.Close()38}

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1import (2func main() {3 executor := exec.Command("ls", "-l")4 err := executor.Run()5 if err != nil {6 fmt.Println("Error occured while running the command")7 os.Exit(-1)8 }9 err = executor.Process.Kill()10 if err != nil {11 fmt.Println("Error occured while closing the command")12 os.Exit(-1)13 }14}15import (16func main() {17 executor := exec.Command("ls", "-l")18 executor.Start()19 err := executor.Process.Kill()20 if err != nil {21 fmt.Println("Error occured while closing the command")22 os.Exit(-1)23 }24}25import (26func main() {27 executor := exec.Command("tail", "-f", "/var/log/auth.log

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