doc: update contribution references

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>

README.md

@@ -4,7 +4,7 @@
 <br/>
 
 ![Go version](https://img.shields.io/badge/go-%3E%3Dv1.18-9cf)
-[![Release](https://img.shields.io/badge/release-2.3.3-green.svg)](https://github.com/duke-git/lancet/releases)
+[![Release](https://img.shields.io/badge/release-2.3.2-green.svg)](https://github.com/duke-git/lancet/releases)
 [![GoDoc](https://godoc.org/github.com/duke-git/lancet/v2?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet/v2)
 [![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet/v2)](https://goreportcard.com/report/github.com/duke-git/lancet/v2)
 [![test](https://github.com/duke-git/lancet/actions/workflows/codecov.yml/badge.svg?branch=main&event=push)](https://github.com/duke-git/lancet/actions/workflows/codecov.yml)
@@ -38,7 +38,7 @@
 go get github.com/duke-git/lancet/v2 // will install latest version of v2.x.x
 ```
 
-2. <b>For users who use version below go1.18, you should install v1.x.x. The latest of v1.x.x is v1.4.4. </b>
+2. <b>For users who use version below go1.18, you should install v1.x.x. The latest of v1.x.x is v1.4.3. </b>
 
 ```go
 go get github.com/duke-git/lancet // below go1.18, install latest version of v1.x.x
@@ -763,7 +763,7 @@ import "github.com/duke-git/lancet/v2/formatter"
 
 #### Function list:
 
--   **<big>Comma</big>** : add comma to a number value by every 3 numbers from right, ahead by a prefix symbol char.
+-   **<big>Comma</big>** : add comma to a number value by every 3 numbers from right, ahead by symbol char.
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/formatter.md#Comma)]
     [[play](https://go.dev/play/p/eRD5k2vzUVX)]
 -   **<big>Pretty</big>** : pretty print data to JSON string.
@@ -1879,19 +1879,6 @@ import "github.com/duke-git/lancet/v2/system"
 -   **<big>GetOsBits</big>** : return current os bits (32 or 64).
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/system.md#GetOsBits)]
     [[play](https://go.dev/play/p/ml-_XH3gJbW)]
--   **<big>StartProcess</big>** : start a new process with the specified name and arguments.
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/system.md#StartProcess)]
-    [[play](todo)]
--   **<big>StopProcess</big>** : stop a process by pid.
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/system.md#StopProcess)]
-    [[play](todo)]
--   **<big>KillProcess</big>** : kill a new process with the specified name and arguments.
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/system.md#KillProcess)]
-    [[play](todo)]
--   **<big>GetProcessInfo</big>** : retrieves detailed process information by pid.
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/en/api/packages/system.md#GetProcessInfo)]
-    [[play](todo)]
-
 
 <h3 id="tuple"> 23. Tuple package implements tuple data type and some operations on it. &nbsp; &nbsp; &nbsp; &nbsp;<a href="#index">index</a></h3>
 

README_zh-CN.md

@@ -4,7 +4,7 @@
 <br/>
 
 ![Go version](https://img.shields.io/badge/go-%3E%3Dv1.18-9cf)
-[![Release](https://img.shields.io/badge/release-2.3.3-green.svg)](https://github.com/duke-git/lancet/releases)
+[![Release](https://img.shields.io/badge/release-2.3.2-green.svg)](https://github.com/duke-git/lancet/releases)
 [![GoDoc](https://godoc.org/github.com/duke-git/lancet/v2?status.svg)](https://pkg.go.dev/github.com/duke-git/lancet/v2)
 [![Go Report Card](https://goreportcard.com/badge/github.com/duke-git/lancet/v2)](https://goreportcard.com/report/github.com/duke-git/lancet/v2)
 [![test](https://github.com/duke-git/lancet/actions/workflows/codecov.yml/badge.svg?branch=main&event=push)](https://github.com/duke-git/lancet/actions/workflows/codecov.yml)
@@ -37,7 +37,7 @@
 go get github.com/duke-git/lancet/v2 //安装v2最新版本v2.x.x
 ```
 
-2. <b>使用 go1.18 以下版本的用户，必须安装 v1.x.x。目前最新的 v1 版本是 v1.4.4。</b>
+2. <b>使用 go1.18 以下版本的用户，必须安装 v1.x.x。目前最新的 v1 版本是 v1.4.3。</b>
 
 ```go
 go get github.com/duke-git/lancet// 使用go1.18以下版本, 必须安装v1.x.x版本
@@ -764,7 +764,7 @@ import "github.com/duke-git/lancet/v2/formatter"
 
 #### 函数列表:
 
--   **<big>Comma</big>** : 用逗号每隔 3 位分割数字/字符串，支持添加前缀符号。
+-   **<big>Comma</big>** : 用逗号每隔 3 位分割数字/字符串，支持前缀添加符号。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/formatter.md#Comma)]
     [[play](https://go.dev/play/p/eRD5k2vzUVX)]
 -   **<big>Pretty</big>** : 返回 pretty JSON 字符串。
@@ -1881,20 +1881,6 @@ import "github.com/duke-git/lancet/v2/system"
 -   **<big>GetOsBits</big>** : 获取当前操作系统位数(32/64)。
     [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/system#GetOsBits)]
     [[play](https://go.dev/play/p/ml-_XH3gJbW)]
--   **<big>StartProcess</big>** :创建进程。
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/system.md#StartProcess)]
-    [[play](todo)]
--   **<big>StopProcess</big>** : 停止进程。
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/system.md#StopProcess)]
-    [[play](todo)]
--   **<big>KillProcess</big>** : 杀掉进程。
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/system.md#KillProcess)]
-    [[play](todo)]
--   **<big>GetProcessInfo</big>** : 根据进程id获取进程信息。
-    [[doc](https://github.com/duke-git/lancet/blob/main/docs/api/packages/system.md#GetProcessInfo)]
-    [[play](todo)]
-
-
 
 <h3 id="tuple"> 23. Tuple 包实现一个元组数据类型。&nbsp; &nbsp; &nbsp; &nbsp;<a href="#index">回到目录</a></h3>
 

docs/api/packages/formatter.md

@@ -37,12 +37,12 @@ import (
 
 ### <span id="Comma">Comma</span>
 
-<p>用逗号每隔3位分割数字/字符串，支持添加前缀符号。参数value必须是数字或者可以转为数字的字符串, 否则返回空字符串</p>
+<p>用逗号每隔3位分割数字/字符串，支持前缀添加符号。参数value必须是数字或者可以转为数字的字符串, 否则返回空字符串</p>
 
 <b>函数签名:</b>
 
 ```go
-func Comma[T constraints.Float | constraints.Integer | string](value T, prefixSymbol string) string
+func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string
 ```
 
 <b>示例:<span style="float:right;display:inline-block;">[运行](https://go.dev/play/p/eRD5k2vzUVX)</span></b>

docs/api/packages/system.md

@@ -1,6 +1,6 @@
 # System
 
-system 包含 os, 运行time, shell command 相关函数。
+system 包含 os, runtime, shell command 相关函数。
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -31,11 +31,6 @@ import (
 -   [CompareOsEnv](#CompareOsEnv)
 -   [ExecCommand](#ExecCommand)
 -   [GetOsBits](#GetOsBits)
--   [StartProcess](#StartProcess)
--   [StopProcess](#StopProcess)
--   [KillProcess](#KillProcess)
--   [GetProcessInfo](#GetProcessInfo)
-
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -253,7 +248,7 @@ func main() {
 
 ```go
 type (
-    Option func(*exec.Cmd)
+	Option func(*exec.Cmd)
 )
 func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
 ```
@@ -313,132 +308,3 @@ func main() {
     fmt.Println(osBit) // 32 or 64
 }
 ```
-
-### <span id="StartProcess">StartProcess</span>
-
-<p>创建进程。</p>
-
-<b>函数签名:</b>
-
-```go
-func StartProcess(command string, args ...string) (int, error)
-```
-
-<b>示例:<span style="float:right;display:inline-block">[运行](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("sleep", "2")
-    if err != nil {
-        return
-    }
-
-    fmt.Println(pid)
-}
-```
-
-### <span id="StopProcess">StopProcess</span>
-
-<p>停止进程。</p>
-
-<b>函数签名:</b>
-
-```go
-func StopProcess(pid int) error
-```
-
-<b>示例:<span style="float:right;display:inline-block">[运行](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("sleep", "10")
-    if err != nil {
-        return
-    }
-    time.Sleep(1 * time.Second)
-
-    err = system.StopProcess(pid)
-
-    fmt.Println(err)
-
-    // Output:
-    // <nil>
-}
-```
-
-### <span id="KillProcess">KillProcess</span>
-
-<p>杀掉进程。</p>
-
-<b>函数签名:</b>
-
-```go
-func KillProcess(pid int) error
-```
-
-<b>示例:<span style="float:right;display:inline-block">[运行](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("sleep", "10")
-    if err != nil {
-        return
-    }
-    time.Sleep(1 * time.Second)
-
-    err = system.KillProcess(pid)
-
-    fmt.Println(err)
-
-    // Output:
-    // <nil>
-}
-```
-
-### <span id="GetProcessInfo">GetProcessInfo</span>
-
-<p>根据进程id获取进程信息。</p>
-
-<b>函数签名:</b>
-
-```go
-func GetProcessInfo(pid int) (*ProcessInfo, error)
-```
-
-<b>示例:<span style="float:right;display:inline-block">[运行](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("ls", "-a")
-    if err != nil {
-        return
-    }
-
-    processInfo, err := system.GetProcessInfo(pid)
-    if err != nil {
-        return
-    }
-
-    fmt.Println(processInfo)
-}
-```

docs/en/api/packages/formatter.md

@@ -37,12 +37,12 @@ import (
 
 ### <span id="Comma">Comma</span>
 
-<p>Add comma to a number value by every 3 numbers from right to left. ahead by a prefix symbol char. if value is a invalid number string like "aa", return empty string.</p>
+<p>Add comma to a number value by every 3 numbers from right to left. ahead by symbol char. if value is a invalid number string like "aa", return empty string.</p>
 
 <b>Signature:</b>
 
 ```go
-func Comma[T constraints.Float | constraints.Integer | string](value T, prefixSymbol string) string
+func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string
 ```
 
 <b>Example:<span style="float:right;display:inline-block;">[Run](https://go.dev/play/p/eRD5k2vzUVX)</span></b>

docs/en/api/packages/system.md

@@ -31,11 +31,6 @@ import (
 -   [CompareOsEnv](#CompareOsEnv)
 -   [ExecCommand](#ExecCommand)
 -   [GetOsBits](#GetOsBits)
--   [StartProcess](#StartProcess)
--   [StopProcess](#StopProcess)
--   [KillProcess](#KillProcess)
--   [GetProcessInfo](#GetProcessInfo)
-
 
 <div STYLE="page-break-after: always;"></div>
 
@@ -254,7 +249,7 @@ The second parameter of the function is the cmd option control parameter. The ty
 
 ```go
 type (
-    Option func(*exec.Cmd)
+	Option func(*exec.Cmd)
 )
 func ExecCommand(command string, opts ...Option) (stdout, stderr string, err error)
 ```
@@ -293,7 +288,7 @@ func main() {
 
 ### <span id="GetOsBits">GetOsBits</span>
 
-<p>Get current os bits, 32bit or 64bit. return 32 or 64.</p>
+<p>Get current os bits, 32bit or 64bit. return 32 or 64</p>
 
 <b>Signature:</b>
 
@@ -314,132 +309,3 @@ func main() {
     fmt.Println(osBit) // 32 or 64
 }
 ```
-
-### <span id="StartProcess">StartProcess</span>
-
-<p>Start a new process with the specified name and arguments.</p>
-
-<b>Signature:</b>
-
-```go
-func StartProcess(command string, args ...string) (int, error)
-```
-
-<b>Example:<span style="float:right;display:inline-block">[Run](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("sleep", "2")
-    if err != nil {
-        return
-    }
-
-    fmt.Println(pid)
-}
-```
-
-### <span id="StopProcess">StopProcess</span>
-
-<p>Stop a process by pid.</p>
-
-<b>Signature:</b>
-
-```go
-func StopProcess(pid int) error
-```
-
-<b>Example:<span style="float:right;display:inline-block">[Run](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("sleep", "10")
-    if err != nil {
-        return
-    }
-    time.Sleep(1 * time.Second)
-
-    err = system.StopProcess(pid)
-
-    fmt.Println(err)
-
-    // Output:
-    // <nil>
-}
-```
-
-### <span id="KillProcess">KillProcess</span>
-
-<p>Kill a process by pid.</p>
-
-<b>Signature:</b>
-
-```go
-func KillProcess(pid int) error
-```
-
-<b>Example:<span style="float:right;display:inline-block">[Run](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("sleep", "10")
-    if err != nil {
-        return
-    }
-    time.Sleep(1 * time.Second)
-
-    err = system.KillProcess(pid)
-
-    fmt.Println(err)
-
-    // Output:
-    // <nil>
-}
-```
-
-### <span id="GetProcessInfo">GetProcessInfo</span>
-
-<p>Retrieves detailed process information by pid.</p>
-
-<b>Signature:</b>
-
-```go
-func GetProcessInfo(pid int) (*ProcessInfo, error)
-```
-
-<b>Example:<span style="float:right;display:inline-block">[Run](todo)</span></b>
-
-```go
-import (
-    "fmt"
-    "github.com/duke-git/lancet/v2/system"
-)
-
-func main() {
-    pid, err := system.StartProcess("ls", "-a")
-    if err != nil {
-        return
-    }
-
-    processInfo, err := system.GetProcessInfo(pid)
-    if err != nil {
-        return
-    }
-
-    fmt.Println(processInfo)
-}
-```

formatter/formatter.go

@@ -14,11 +14,11 @@ import (
 	"golang.org/x/exp/constraints"
 )
 
-// Comma add comma to a number value by every 3 numbers from right. ahead by prefix symbol char.
+// Comma add comma to a number value by every 3 numbers from right. ahead by symbol char.
 // if value is invalid number string eg "aa", return empty string
 // Comma("12345", "$") => "$12,345", Comma(12345, "$") => "$12,345"
 // Play: https://go.dev/play/p/eRD5k2vzUVX
-func Comma[T constraints.Float | constraints.Integer | string](value T, prefixSymbol string) string {
+func Comma[T constraints.Float | constraints.Integer | string](value T, symbol string) string {
 	numString := convertor.ToString(value)
 
 	_, err := strconv.ParseFloat(numString, 64)
@@ -26,26 +26,17 @@ func Comma[T constraints.Float | constraints.Integer | string](value T, prefixSy
 		return ""
 	}
 
-	isNegative := strings.HasPrefix(numString, "-")
-	if isNegative {
-		numString = numString[1:]
-	}
-
 	index := strings.Index(numString, ".")
 	if index == -1 {
 		index = len(numString)
 	}
 
 	for index > 3 {
-		index -= 3
+		index = index - 3
 		numString = numString[:index] + "," + numString[index:]
 	}
 
-	if isNegative {
+	return symbol + numString
-		numString = "-" + numString
-	}
-
-	return prefixSymbol + numString
 }
 
 // Pretty data to JSON string.

formatter/formatter_test.go

@@ -28,10 +28,6 @@ func TestComma(t *testing.T) {
 	assert.Equal("12,345.6789", Comma(+12345.6789, ""))
 	assert.Equal("12,345,678.9", Comma(12345678.9, ""))
 	assert.Equal("123,456,789,000", Comma(123456789000, ""))
-
-	assert.Equal("-999", Comma(-999, ""))
-	assert.Equal("-1,000", Comma(-1000, ""))
-	assert.Equal("-1,234,567", Comma(-1234567, ""))
 }
 
 func TestPretty(t *testing.T) {

netutil/net.go

@@ -21,48 +21,21 @@ import (
 // GetInternalIp return internal ipv4.
 // Play: https://go.dev/play/p/5mbu-gFp7ei
 func GetInternalIp() string {
-	addrs, err := net.InterfaceAddrs()
+	addr, err := net.InterfaceAddrs()
 	if err != nil {
 		panic(err.Error())
 	}
-
+	for _, a := range addr {
-	for _, addr := range addrs {
+		if ipNet, ok := a.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
-		var ip net.IP
+			if ipNet.IP.To4() != nil {
-		switch v := addr.(type) {
+				return ipNet.IP.String()
-		case *net.IPNet:
+			}
-			ip = v.IP
-		case *net.IPAddr:
-			ip = v.IP
-		}
-
-		if ip != nil && (ip.IsLinkLocalUnicast() || ip.IsGlobalUnicast()) {
-			continue
-		}
-
-		if ipv4 := ip.To4(); ipv4 != nil {
-			return ipv4.String()
 		}
 	}
 
 	return ""
 }
 
-// func GetInternalIp() string {
-// 	addr, err := net.InterfaceAddrs()
-// 	if err != nil {
-// 		panic(err.Error())
-// 	}
-// 	for _, a := range addr {
-// 		if ipNet, ok := a.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
-// 			if ipNet.IP.To4() != nil {
-// 				return ipNet.IP.String()
-// 			}
-// 		}
-// 	}
-
-// 	return ""
-// }
-
 // GetRequestPublicIp return the requested public ip.
 // Play: https://go.dev/play/p/kxU-YDc_eBo
 func GetRequestPublicIp(req *http.Request) string {

strutil/string.go

@@ -75,7 +75,7 @@ func LowerFirst(s string) string {
 	return string(r) + s[size:]
 }
 
-// Pad pads string on the left and right side if it's shorter than size.
+// PadStart pads string on the left and right side if it's shorter than size.
 // Padding characters are truncated if they exceed size.
 // Play: https://go.dev/play/p/NzImQq-VF8q
 func Pad(source string, size int, padStr string) string {

system/os.go

@@ -6,12 +6,9 @@ package system
 
 import (
 	"bytes"
-	"fmt"
 	"os"
 	"os/exec"
 	"runtime"
-	"strconv"
-	"strings"
 	"unicode/utf8"
 
 	"github.com/duke-git/lancet/v2/validator"
@@ -135,190 +132,3 @@ func byteToString(data []byte, charset string) string {
 func GetOsBits() int {
 	return 32 << (^uint(0) >> 63)
 }
-
-// StartProcess start a new process with the specified name and arguments.
-// Play: todo
-func StartProcess(command string, args ...string) (int, error) {
-	cmd := exec.Command(command, args...)
-
-	if err := cmd.Start(); err != nil {
-		return 0, err
-	}
-
-	return cmd.Process.Pid, nil
-}
-
-// StopProcess stop a process by pid.
-// Play: todo
-func StopProcess(pid int) error {
-	process, err := os.FindProcess(pid)
-	if err != nil {
-		return err
-	}
-
-	return process.Signal(os.Kill)
-}
-
-// KillProcess kill a process by pid.
-// Play: todo
-func KillProcess(pid int) error {
-	process, err := os.FindProcess(pid)
-	if err != nil {
-		return err
-	}
-
-	return process.Kill()
-}
-
-// ProcessInfo contains detailed information about a process.
-type ProcessInfo struct {
-	PID                int
-	CPU                string
-	Memory             string
-	State              string
-	User               string
-	Cmd                string
-	Threads            []string
-	IOStats            string
-	StartTime          string
-	ParentPID          int
-	NetworkConnections string
-}
-
-// GetProcessInfo retrieves detailed process information by pid.
-// Play: todo
-func GetProcessInfo(pid int) (*ProcessInfo, error) {
-	var cmd *exec.Cmd
-
-	if runtime.GOOS == "windows" {
-		cmd = exec.Command("tasklist", "/FI", fmt.Sprintf("PID eq %d", pid), "/FO", "CSV", "/V")
-	} else {
-		cmd = exec.Command("ps", "-p", strconv.Itoa(pid), "-o", "pid,%cpu,%mem,state,user,comm")
-	}
-
-	output, err := cmd.Output()
-	if err != nil {
-		return nil, err
-	}
-
-	processInfo, err := parseProcessInfo(output, pid)
-	if err != nil {
-		return nil, err
-	}
-
-	if runtime.GOOS != "windows" {
-		processInfo.Threads, _ = getThreadsInfo(pid)
-		processInfo.IOStats, _ = getIOStats(pid)
-		processInfo.StartTime, _ = getProcessStartTime(pid)
-		processInfo.ParentPID, _ = getParentProcess(pid)
-		processInfo.NetworkConnections, _ = getNetworkConnections(pid)
-	}
-
-	return processInfo, nil
-}
-
-// parseProcessInfo parses the output of `ps` or `tasklist` to fill the ProcessInfo structure.
-func parseProcessInfo(output []byte, pid int) (*ProcessInfo, error) {
-	lines := strings.Split(string(output), "\n")
-
-	if len(lines) < 2 {
-		return nil, fmt.Errorf("no process found with PID %d", pid)
-	}
-
-	var processInfo ProcessInfo
-	if runtime.GOOS == "windows" {
-		fields := strings.Split(lines[1], "\",\"")
-		if len(fields) < 9 {
-			return nil, fmt.Errorf("unexpected tasklist output format")
-		}
-
-		processInfo = ProcessInfo{
-			PID:    pid,
-			CPU:    "N/A",
-			Memory: fields[4], // Memory usage in K
-			State:  fields[5],
-			User:   "N/A",
-			Cmd:    fields[8],
-		}
-	} else {
-		fields := strings.Fields(lines[1])
-		if len(fields) < 6 {
-			return nil, fmt.Errorf("unexpected ps output format")
-		}
-
-		processInfo = ProcessInfo{
-			PID:    pid,
-			CPU:    fields[1],
-			Memory: fields[2],
-			State:  fields[3],
-			User:   fields[4],
-			Cmd:    fields[5],
-		}
-	}
-
-	return &processInfo, nil
-}
-
-func getThreadsInfo(pid int) ([]string, error) {
-	cmd := exec.Command("ps", "-T", "-p", strconv.Itoa(pid))
-	output, err := cmd.Output()
-	if err != nil {
-		return nil, err
-	}
-
-	lines := strings.Split(string(output), "\n")
-
-	var threads []string
-	for _, line := range lines[1:] {
-		if strings.TrimSpace(line) != "" {
-			threads = append(threads, line)
-		}
-	}
-
-	return threads, nil
-}
-
-func getIOStats(pid int) (string, error) {
-	filePath := fmt.Sprintf("/proc/%d/io", pid)
-	data, err := os.ReadFile(filePath)
-	if err != nil {
-		return "", err
-	}
-
-	return string(data), nil
-}
-
-func getProcessStartTime(pid int) (string, error) {
-	cmd := exec.Command("ps", "-p", strconv.Itoa(pid), "-o", "lstart=")
-	output, err := cmd.Output()
-	if err != nil {
-		return "", err
-	}
-
-	return strings.TrimSpace(string(output)), nil
-}
-
-func getParentProcess(pid int) (int, error) {
-	cmd := exec.Command("ps", "-o", "ppid=", "-p", strconv.Itoa(pid))
-	output, err := cmd.Output()
-	if err != nil {
-		return 0, err
-	}
-
-	ppid, err := strconv.Atoi(strings.TrimSpace(string(output)))
-	if err != nil {
-		return 0, err
-	}
-
-	return ppid, nil
-}
-
-func getNetworkConnections(pid int) (string, error) {
-	cmd := exec.Command("lsof", "-p", strconv.Itoa(pid), "-i")
-	output, err := cmd.Output()
-	if err != nil {
-		return "", err
-	}
-
-	return string(output), nil
-}

system/os_example_test.go

@@ -1,9 +1,6 @@
 package system
 
-import (
+import "fmt"
-	"fmt"
-	"time"
-)
 
 func ExampleSetOsEnv() {
 	err := SetOsEnv("foo", "abc")
@@ -78,56 +75,3 @@ func ExampleGetOsBits() {
 	// Output:
 	// 64
 }
-
-func ExampleStartProcess() {
-	pid, err := StartProcess("sleep", "2")
-	if err != nil {
-		return
-	}
-
-	fmt.Println(pid)
-}
-
-func ExampleStopProcess() {
-	pid, err := StartProcess("sleep", "10")
-	if err != nil {
-		return
-	}
-	time.Sleep(1 * time.Second)
-
-	err = StopProcess(pid)
-
-	fmt.Println(err)
-
-	// Output:
-	// <nil>
-}
-
-func ExampleKillProcess() {
-	pid, err := StartProcess("sleep", "3")
-	if err != nil {
-		return
-	}
-	time.Sleep(1 * time.Second)
-
-	err = KillProcess(pid)
-
-	fmt.Println(err)
-
-	// Output:
-	// <nil>
-}
-
-func ExampleGetProcessInfo() {
-	pid, err := StartProcess("ls", "-a")
-	if err != nil {
-		return
-	}
-
-	processInfo, err := GetProcessInfo(pid)
-	if err != nil {
-		return
-	}
-
-	fmt.Println(processInfo)
-}

system/os_test.go

@@ -1,10 +1,8 @@
 package system
 
 import (
-	"os/exec"
 	"strings"
 	"testing"
-	"time"
 
 	"github.com/duke-git/lancet/v2/internal"
 )
@@ -55,9 +53,7 @@ func TestExecCommand(t *testing.T) {
 	assert := internal.NewAssert(t, "TestExecCommand")
 
 	// linux or mac
-	stdout, stderr, err := ExecCommand("ls", func(cmd *exec.Cmd) {
+	stdout, stderr, err := ExecCommand("ls")
-		cmd.Dir = "/"
-	})
 	t.Log("std out: ", stdout)
 	t.Log("std err: ", stderr)
 	assert.Equal("", stderr)
@@ -78,6 +74,16 @@ func TestExecCommand(t *testing.T) {
 	assert.IsNotNil(err)
 }
 
+// func TestExecCommandWithOption(t *testing.T) {
+// 	assert := internal.NewAssert(t, "TestExecCommandWithOption")
+
+// 	stdout, stderr, err := ExecCommand("ls", WithForeground())
+// 	t.Log("std out: ", stdout)
+// 	t.Log("std err: ", stderr)
+// 	assert.Equal("", stderr)
+// 	assert.IsNil(err)
+// }
+
 func TestGetOsBits(t *testing.T) {
 	t.Parallel()
 
@@ -89,56 +95,3 @@ func TestGetOsBits(t *testing.T) {
 		t.Error("os is not 32 or 64 bits")
 	}
 }
-
-func TestStartProcess(t *testing.T) {
-	t.Parallel()
-
-	assert := internal.NewAssert(t, "TestStartProcess")
-
-	pid, err := StartProcess("ls", "-a")
-
-	assert.IsNil(err)
-	assert.Equal(true, pid > 0)
-}
-
-func TestKillProcess(t *testing.T) {
-	t.Parallel()
-
-	assert := internal.NewAssert(t, "TestKillProcess")
-
-	pid, err := StartProcess("ls")
-	assert.IsNil(err)
-	assert.Equal(true, pid > 0)
-
-	err = KillProcess(pid)
-	assert.IsNil(err)
-}
-
-func TestStopProcess(t *testing.T) {
-	t.Parallel()
-
-	assert := internal.NewAssert(t, "TestStopProcess")
-
-	pid, err := StartProcess("ls")
-	assert.IsNil(err)
-	assert.Equal(true, pid > 0)
-
-	err = StopProcess(pid)
-	assert.IsNil(err)
-}
-
-func TestGetProcessInfo(t *testing.T) {
-	t.Parallel()
-
-	assert := internal.NewAssert(t, "TestGetProcessInfo")
-
-	pid, err := StartProcess("ls", "-a")
-	assert.IsNil(err)
-
-	time.Sleep(1 * time.Second)
-
-	processInfo, err := GetProcessInfo(pid)
-	assert.IsNil(err)
-
-	t.Log(processInfo)
-}