【问题标题】:Parsing the output to verify the column value解析输出以验证列值
【发布时间】:2019-07-05 18:30:39
【问题描述】:

docker ps 命令的输出如下:

容器 ID 图像命令创建状态端口名称 e1d52c0adee7 share-platform:6000/share-platform:1.0.96-windowsservercore "powershell -Command..." 3 个月前 上升 2 周 share-platform ad6a8e2c7fd0 prism:6000/prism-platform:1.0.1078-windowsservercore "powershell -Command..." 3 个月前 上升 2 个月 9080/tcp prism-platform efd847643e86 mongo:6000/mongo:3.2-windowsservercore "mongod --smallfiles..." 3 个月前 **2 周前重新启动 (100) ** 27017/tcp mongo 3d8ab9b5c36e share:6000/share-app:1.0.153-windowsservercore "powershell -Command..." 3 个月前 2 个月前 share-app dc4b1053d9da prism-app:6000/prism-app:1.0.4183.1-windowsservercore "powershell -Command¦" 3 个月前 2 个月前 prism-app 2a38e006f85f core:6000/welcome:1.0.241.1-windowsservercore "powershell -Command¦" 3 个月前 上升 2 个月

我正在尝试遍历输出中的状态列,如果有UP 以外的状态,我想回显它。

我尝试将其导出为 csv,然后使用 Import-Csv。预期的是,由于 MongoDB 状态不是 Up,我希望它像“Mongo 未启动”一样将其回显到屏幕上(从 NAMES 列中获取名称)。

脚本的实际结果为空白。

docker ps | out-file D:\temp\PAW_ps.csv
$csv = Import-Csv D:\Temp\PAW_ps.csv
foreach ($row in $csv)
{
$name = $row.NAMES
$status = $row.STATUS
if ($status -ne "UP")
{
  echo "The process $name is not Up"
}




 Output of docker ps | gm
  PS C:\Windows\system32> docker ps | gm


   TypeName: System.String

   Name             MemberType            Definition                                                                                                                                                                                                                
   ----             ----------            ----------                                                                                                                                                                                                                
   Clone            Method                System.Object Clone(), System.Object 
   ICloneable.Clone()                                                                                                                                                                   
   CompareTo        Method                int CompareTo(System.Object value), 
   int CompareTo(string strB), int IComparable.CompareTo(System.Object obj), int IComparable[string].CompareTo(string other)                                                             
Contains         Method                bool Contains(string value)                                                                                                                                                                                               
CopyTo           Method                void CopyTo(int sourceIndex, char[] destination, int destinationIndex, int count)                                                                                                                                         
EndsWith         Method                bool EndsWith(string value), bool EndsWith(string value, System.StringComparison comparisonType), bool EndsWith(string value, bool ignoreCase, cultureinfo culture)                                                       
Equals           Method                bool Equals(System.Object obj), bool Equals(string value), bool Equals(string value, System.StringComparison comparisonType), bool IEquatable[string].Equals(string other)                                                
GetEnumerator    Method                System.CharEnumerator GetEnumerator(), System.Collections.IEnumerator IEnumerable.GetEnumerator(), System.Collections.Generic.IEnumerator[char] IEnumerable[char].GetEnumerator()                                         
GetHashCode      Method                int GetHashCode()                                                                                                                                                                                                         
GetType          Method                type GetType()                                                                                                                                                                                                            
GetTypeCode      Method                System.TypeCode GetTypeCode(), System.TypeCode IConvertible.GetTypeCode()                                                                                                                                                 
IndexOf          Method                int IndexOf(char value), int IndexOf(char value, int startIndex), int IndexOf(char value, int startIndex, int count), int IndexOf(string value), int IndexOf(string value, int startIndex), int IndexOf(string value, i...
IndexOfAny       Method                int IndexOfAny(char[] anyOf), int IndexOfAny(char[] anyOf, int startIndex), int IndexOfAny(char[] anyOf, int startIndex, int count)                                                                                       
Insert           Method                string Insert(int startIndex, string value)                                                                                                                                                                               
IsNormalized     Method                bool IsNormalized(), bool IsNormalized(System.Text.NormalizationForm normalizationForm)                                                                                                                                   
LastIndexOf      Method                int LastIndexOf(char value), int LastIndexOf(char value, int startIndex), int LastIndexOf(char value, int startIndex, int count), int LastIndexOf(string value), int LastIndexOf(string value, int startIndex), int Las...
LastIndexOfAny   Method                int LastIndexOfAny(char[] anyOf), int LastIndexOfAny(char[] anyOf, int startIndex), int LastIndexOfAny(char[] anyOf, int startIndex, int count)                                                                           
Normalize        Method                string Normalize(), string Normalize(System.Text.NormalizationForm normalizationForm)                                                                                                                                     
PadLeft          Method                string PadLeft(int totalWidth), string PadLeft(int totalWidth, char paddingChar)                                                                                                                                          
PadRight         Method                string PadRight(int totalWidth), string PadRight(int totalWidth, char paddingChar)                                                                                                                                        
Remove           Method                string Remove(int startIndex, int count), string Remove(int startIndex)                                                                                                                                                   
Replace          Method                string Replace(char oldChar, char newChar), string Replace(string oldValue, string newValue)                                                                                                                              
Split            Method                string[] Split(Params char[] separator), string[] Split(char[] separator, int count), string[] Split(char[] separator, System.StringSplitOptions options), string[] Split(char[] separator, int count, System.StringSpl...
StartsWith       Method                bool StartsWith(string value), bool StartsWith(string value, System.StringComparison comparisonType), bool StartsWith(string value, bool ignoreCase, cultureinfo culture)                                                 
Substring        Method                string Substring(int startIndex), string Substring(int startIndex, int length)                                                                                                                                            
ToBoolean        Method                bool IConvertible.ToBoolean(System.IFormatProvider provider)                                                                                                                                                              
ToByte           Method                byte IConvertible.ToByte(System.IFormatProvider provider)                                                                                                                                                                 
ToChar           Method                char IConvertible.ToChar(System.IFormatProvider provider)                                                                                                                                                                 
ToCharArray      Method                char[] ToCharArray(), char[] ToCharArray(int startIndex, int length)                                                                                                                                                      
ToDateTime       Method                datetime IConvertible.ToDateTime(System.IFormatProvider provider)                                                                                                                                                         
ToDecimal        Method                decimal IConvertible.ToDecimal(System.IFormatProvider provider)                                                                                                                                                           
ToDouble         Method                double IConvertible.ToDouble(System.IFormatProvider provider)                                                                                                                                                             
ToInt16          Method                int16 IConvertible.ToInt16(System.IFormatProvider provider)                                                                                                                                                               
ToInt32          Method                int IConvertible.ToInt32(System.IFormatProvider provider)                                                                                                                                                                 
ToInt64          Method                long IConvertible.ToInt64(System.IFormatProvider provider)                                                                                                                                                                
ToLower          Method                string ToLower(), string ToLower(cultureinfo culture)                                                                                                                                                                     
ToLowerInvariant Method                string ToLowerInvariant()                                                                                                                                                                                                 
ToSByte          Method                sbyte IConvertible.ToSByte(System.IFormatProvider provider)                                                                                                                                                               
ToSingle         Method                float IConvertible.ToSingle(System.IFormatProvider provider)                                                                                                                                                              
ToString         Method                string ToString(), string ToString(System.IFormatProvider provider), string IConvertible.ToString(System.IFormatProvider provider)                                                                                        
ToType           Method                System.Object IConvertible.ToType(type conversionType, System.IFormatProvider provider)                                                                                                                                   
ToUInt16         Method                uint16 IConvertible.ToUInt16(System.IFormatProvider provider)                                                                                                                                                             
ToUInt32         Method                uint32 IConvertible.ToUInt32(System.IFormatProvider provider)                                                                                                                                                             
ToUInt64         Method                uint64 IConvertible.ToUInt64(System.IFormatProvider provider)                                                                                                                                                             
ToUpper          Method                string ToUpper(), string ToUpper(cultureinfo culture)                                                                                                                                                                     
ToUpperInvariant Method                string ToUpperInvariant()                                                                                                                                                                                                 
Trim             Method                string Trim(Params char[] trimChars), string Trim()                                                                                                                                                                       
TrimEnd          Method                string TrimEnd(Params char[] trimChars)                                                                                                                                                                                   
TrimStart        Method                string TrimStart(Params char[] trimChars)                                                                                                                                                                                 
Chars            ParameterizedProperty char Chars(int index) {get;}                                                                                                                                                                                              
Length           Property              int Length {get;}   

【问题讨论】:

  • 可以分享一下CSV文件内容吗?只是为了了解您实际看到的列。
  • 您能否尝试运行docker ps | Get-Member 并使用结果更新您的问题?
  • 我添加了 docker ps | 的输出gm 到原始消息。谢谢
  • 一切顺利吗?

标签: powershell powershell-4.0


【解决方案1】:

您不需要导出和导入您尝试使用的数据。

一个快速的伪代码示例:

docker ps | ForEach-Object {
    if ($_.STATUS -ne "UP") {
        Echo "The process $($_.NAMES) is not up"
    }
}

【讨论】:

  • 非常感谢@Motz。状态列具有状态“正常运行时间”,如“Up 2 Months”“Up 2 Weeks”。所以我调整了你的脚本来改变它: if ($_.STATUS -notlike "Up").但是输出为空 进程未启动 进程未启动 进程未启动 进程未启动
  • 您能运行docker ps | gm 并与我们分享它的输出吗?如果你说的是真的,我想应该是-notlike "*Up*"...
  • 我已经添加了 docker ps | 的输出gm 到原始消息。谢谢
  • 从你分享的输出看来,输出只是一个字符串。我需要看看是否可以访问有效的 docker 映像,以便进行测试。
  • 好的,非常感谢。
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