SebMa's questions

我有以下/etc/docker/daemon.json文件：

$ yq . /etc/docker/daemon.json
{
  "dns": [
    "a.b.c.d1"
  ]
}
$

我尝试使用此命令将代理行附加到此文件yq：

$ yq '. + { proxies : {  "http-proxy":env($http_proxy) , "https-proxy":env($https_proxy) , "no-proxy":env($no_proxy)} }' /etc/docker/daemon.json
Error: 1:7: invalid input text "proxies : {  \"ht..."
$

我也尝试了这个yq命令：

$ yq '. + { .proxies = {  .http-proxy=env($http_proxy) , .https-proxy=env($https_proxy) , .no-proxy=env($no_proxy)} }' /etc/docker/daemon.json
Error: !!str () cannot be added to a !!map ()
$

我期望这个 json：

{
  "dns": [
    "a.b.c.d1"
  ],
  "proxies": {
    "http-proxy": "http://x.y.z.t:8080",
    "https-proxy": "http://x.y.z.t:8080",
    "no-proxy": "localhost,127.0.0.1,localaddress,.localdomain.com"
  }
}

我怎样才能做到这一点yq？

我想使用以下代码测试别名是否存在：

if( (get-alias ls) ) {
    echo "=> Alias ls already exists."
} else {
    echo "=> Alias ls does not exist."
}

运行时，它显示：

CommandType     Name                                               Version    Source
-----------     ----                                               -------    ------
Alias           ls -> Get-ChildItem


=> Alias ls already exits.

我试图将命令的输出重定向到 $null ：

if( (get-alias ls >$null) ) {
    echo "=> Alias ls already exits."
} else {
    echo "=> Alias ls does not exist."
}

我预计运行时会出现以下输出：

=> Alias ls already exists.

但代码片段的结果不知何故发生了改变：

=> Alias ls does not exist.

如果我在第一组括号后重定向，我也会得到：

=> Alias ls does not exist.

为什么重定向会干扰结果？

我有以下 JSON 数据：

$ cat toto.json
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6fe7cfd0d0 @scope=#<SessionsController:0x00000000186758>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ffb16f3f8 @scope=#<SessionsController:0x00000000186910>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6fe7e3e930 @scope=#<SessionsController:0x00000000186870>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ff9a45a10 @scope=#<SessionsController:0x000000001869b0>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ffd3dbc48 @scope=#<SessionsController:0x000000001867f8>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ff75fb880 @scope=#<SessionsController:0x00000000186a50>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ff75ffe80 @scope=#<SessionsController:0x00000000186a28>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ffb34a858 @scope=#<SessionsController:0x00000000188530>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ff724b460 @scope=#<SessionsController:0x00000000188670>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ff6b526e0 @scope=#<SessionsController:0x000000001886e8>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6fdda80500 @scope=#<SessionsController:0x00000000188f08>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6feb2ab010 @scope=#<SessionsController:0x00000000188850>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6fddc9b330 @scope=#<SessionsController:0x00000000188fa8>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ff6740098 @scope=#<SessionsController:0x00000000188b70>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6ffb73f3f0 @scope=#<SessionsController:0x00000000189138>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x00007d6fe8b98d88 @scope=#<SessionsController:0x00000000188990>, @routes=#<ActionDispatch::Routing::RouteSet:0x00007d701b857b28>, @helpers=#<Module:0x00007d701b6f38b8>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x000076156685d378 @scope=#<SessionsController:0x00000000186758>, @routes=#<ActionDispatch::Routing::RouteSet:0x000076159a35afe0>, @helpers=#<Module:0x000076159a1e8b30>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x0000761566955ca8 @scope=#<SessionsController:0x000000001867f8>, @routes=#<ActionDispatch::Routing::RouteSet:0x000076159a35afe0>, @helpers=#<Module:0x000076159a1e8b30>, @script_namer=nil>"
}
{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x000076155c824410 @scope=#<SessionsController:0x00000000188dc8>, @routes=#<ActionDispatch::Routing::RouteSet:0x000076159a35afe0>, @helpers=#<Module:0x000076159a1e8b30>, @script_namer=nil>"
}

我尝试了这个命令cat toto.js | jq '[.][-1]'但它输出了整个文件。

我也尝试了这个命令cat toto.js | jq 'last(.)'但它也输出了整个文件。

我只期望最后一个元素：

{
  "method": "GET",
  "path": "/users/sign_in",
  "status": 500,
  "exception.class": "NoMethodError",
  "exception.message": "undefined method `user_azure_activedirectory_v2_omniauth_authorize_path' for #<ActionDispatch::Routing::RoutesProxy:0x000076155c824410 @scope=#<SessionsController:0x00000000188dc8>, @routes=#<ActionDispatch::Routing::RouteSet:0x000076159a35afe0>, @helpers=#<Module:0x000076159a1e8b30>, @script_namer=nil>"
}

我希望我的pow2($a,$n)函数能够调用，[math]::pow($a,$n)所以我写了这个：

function pow2($a,$n) {
    return [math]::pow($a,$n)
}

但是当我调用它时，我收到此错误：

PS C:\> pow2(2,10)
Cannot convert argument "x", with value: "System.Object[]", for "Pow" to type "System.Double": "Cannot convert the "System.Object[]" value of
type "System.Object[]" to type "System.Double"."
At C:\Users\sebastien.mansfeld\OneDrive - PLURIAD – Groupe
Media-Participations\Documents\WindowsPowerShell\Microsoft.PowerShell_profile.ps1:18 char:9
+     return [math]::pow($a,$n)
+            ~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodException
    + FullyQualifiedErrorId : MethodArgumentConversionInvalidCastArgument

PS C:\> 

我期望这个结果：

PS C:\> pow2(2,10)
1024
PS C:\> 

我正在尝试编写一个带有单引号的 git 别名函数来重命名和提交名称中可能包含空格的文件，但它不起作用：

$ grep '^\s*mvv' ~/.gitconfig 
    mvv = '!f() { cd ${GIT_PREFIX:-.};git mv -v "$1" "$2";git commit -uno "$1" "$2" -m "Renamed $1 to $2"; }; f'
$ git mvv "9.1.3 Packet Tracer - Identify MAC and IP Addresses - ILM.pdf" 9.1.3_Packet_Tracer_-_Identify_MAC_and_IP_Addresses_-_ILM.pdf
fatal: bad alias.mvv string: unclosed quote
$ git config alias.mvv
'!f() { cd ${GIT_PREFIX:-.}

我也尝试过这个：

$ grep '^\s*mvv' ~/.gitconfig 
    mvv = !sh -c '{ cd ${GIT_PREFIX:-.};git mv -v "$1" "$2";git commit -uno "$1" "$2" -m "Renamed $1 to $2"; }'
$ git mvv "9.1.3 Packet Tracer - Identify MAC and IP Addresses - ILM.pdf" 9.1.3_Packet_Tracer_-_Identify_MAC_and_IP_Addresses_-_ILM.pdf
sh -c '{ cd ${GIT_PREFIX:-.}: 1: Syntax error: Unterminated quoted string
$ git config alias.mvv
!sh -c '{ cd ${GIT_PREFIX:-.}
$

但是当我运行它时，却说fatal: bad alias.mvv string: unclosed quote错误。

我希望它能发挥作用。

我正在尝试使用以下 powershell 代码将 foreach 循环输出重定向到文件：

PS C:\> foreach ( $dir in "c:\ProgramData", "c:\Program Files", "c:\Program Files (x86)" ) { echo "=> $dir :" ; dir -r -fo $dir 2>$null | % FullName | sls 'exe$' } > C:\temp\VDI_Exclustion_List.txt

但输出显示在标准输出上，我收到此错误：

> : The term '>' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:157
+ ... ir :" ; dir -r -fo $dir 2>$null | % FullName | sls 'exe$' } > C:\temp ...
+                                                                 ~
    + CategoryInfo          : ObjectNotFound: (>:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException


PS C:\> ls C:\temp\VDI_Exclustion_List.txt
ls : Cannot find path 'C:\temp\VDI_Exclustion_List.txt' because it does not exist.
At line:1 char:1
+ ls C:\temp\VDI_Exclustion_List.txt
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (C:\temp\VDI_Exclustion_List.txt:String) [Get-ChildItem], ItemNotFoundEx
   ception
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.GetChildItemCommand

PS C:\>

首先，我尝试用>以下方式替换重定向 | Out-File C:\temp\VDI_Exclustion_List.txt，但这不起作用：

At line:1 char:138
+ ... 6)" ) { dir -r -fo $dir 2>$null | % FullName | sls 'exe$' } | Out-Fil ...
+                                                                 ~
An empty pipe element is not allowed.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : EmptyPipeElement



PS C:\>

然后我尝试用（在这里找到>）替换重定向，但这也不起作用： 6>&1 | Out-File C:\temp\VDI_Exclustion_List.txt

PS C:\> foreach ( $dir in "c:\ProgramData", "c:\Program Files", "c:\Program Files (x86)" ) { echo "=> $dir :" ; dir -r -fo $dir 2>$null | % FullName | sls 'exe$' } 6>&1 | Out-File C:\temp\VDI_Exclustion_List.txt
......
6>&1 : The term '6>&1' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try
again.
At line:1 char:157
+ ... :" ; dir -r -fo $dir 2>$null | % FullName | sls 'exe$' } 6>&1 | Out-F ...
+                                                              ~~~~
    + CategoryInfo          : ObjectNotFound: (6>&1:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException


PS C:\> 

我希望输出位于文件 C:\temp\VDI_Exclustion_List.txt 内，但该文件甚至没有创建。

我正在尝试选择包含受此解决方案启发的特定正则表达式模式的块：

$ blockBEGIN='ID'
$ blockEND='Sector Size'
$ myPATTERN='Ready'
$ cat pdisks-simplified-20230825.log | sed -n "/$blockBEGIN/,/$blockEND/{/$blockEND/"'s/$/\x00/;p}' | grep -z "$myPATTERN" | grep -z -v "$blockEND" | tr -d '\x00'
$

但什么也没有出现。

输入示例：

ID                              : 0:1:4
Status                          : Ok
State                           : Ready
Power Status                    : Spun Up
Bus Protocol                    : SAS
Media                           : HDD
Capacity                        : 3,725.50 GB (4000225165312 bytes)
Vendor ID                       : DELL(tm)
Product ID                      : ST4000NM0023
Serial No.                      : Z1Z6AAR9
Part Number                     : TH0529FG212334AI01AGA02
Sector Size                     : 512B
ID                              : 0:1:0
Status                          : Ok
State                           : Online
Power Status                    : Not Applicable
Bus Protocol                    : SATA
Media                           : SSD
Capacity                        : 372.00 GB (399431958528 bytes)
Vendor ID                       : DELL(tm)
Product ID                      : INTEL SSDSC2BX400G4R
Serial No.                      : BTHC721403F8400VGN
Part Number                     : CN065WJJIT200766014OA00
Sector Size                     : 512B

这是文件中的匹配块pdisks-simplified-20230825.log，如下所示：

ID                              : 0:1:4
Status                          : Ok
State                           : Ready
Power Status                    : Spun Up
Bus Protocol                    : SAS
Media                           : HDD
Capacity                        : 3,725.50 GB (4000225165312 bytes)
Vendor ID                       : DELL(tm)
Product ID                      : ST4000NM0023
Serial No.                      : Z1Z6AAR9
Part Number                     : TH0529FG212334AI01AGA02
Sector Size                     : 512B
$

这是文件中的一个不匹配的块，pdisks-simplified-20230825.log如下所示：

ID                              : 0:1:0
Status                          : Ok
State                           : Online
Power Status                    : Not Applicable
Bus Protocol                    : SATA
Media                           : SSD
Capacity                        : 372.00 GB (399431958528 bytes)
Vendor ID                       : DELL(tm)
Product ID                      : INTEL SSDSC2BX400G4R
Serial No.                      : BTHC721403F8400VGN
Part Number                     : CN065WJJIT200766014OA00
Sector Size                     : 512B
$

我怎样才能做到这一点 ？