linux_powershell/bash_获取相对路径对应的绝对路径(resolve-path/realpath)alias别名创建失败_找不到路径/

powershell_获取相对路径对应的绝对路径

reference

• Get Absolute Path from Relative Path in PowerShell - snippset

PS D:\repos\blogs> help path|sort category

Name                              Category  Module                    Synopsis
----                              --------  ------                    --------
Convert-Path                      Cmdlet    Microsoft.PowerShell.Man… Converts a path from a PowerShell path to a PowerShell provider path.
Join-Path                         Cmdlet    Microsoft.PowerShell.Man… Combines a path and a child path into a single path.
Resolve-Path                      Cmdlet    Microsoft.PowerShell.Man… Resolves the wildcard characters in a path, and displays the path contents.
Split-Path                        Cmdlet    Microsoft.PowerShell.Man… Returns the specified part of a path.
Test-Path                         Cmdlet    Microsoft.PowerShell.Man… Determines whether all elements of a path exist.
backupEnvs_regeditPrintPath       Function  functionsByCxxu           …
Get-PromptPath                    Function  posh-git                  …
Get-CMsmqMessageQueuePath         Function  Carbon                    …

从上述信息来看,resolve-path 似乎会是我们需要的cmdlet

• 通过该命令查看用例 help Resolve-Path -Examples
  • 确实是我们想要的

  • 
    NAME
        Resolve-Path
      
    SYNOPSIS
        Resolves the wildcard characters in a path, and displays the path contents.
      
      
        ----------- Example 1: Resolve the home folder path -----------
      
        PS C:\> Resolve-Path ~
      
        Path
        ----
        C:\Users\User01
      
      
        ------ Example 2: Resolve the path of the Windows folder ------
      
        PS C:\> Resolve-Path -Path "windows"
      
        Path
        ----
        C:\Windows
      
        When run from the root of the C: drive, this command returns the path of the Windows folder in the C: drive.
        -------- Example 3: Get all paths in the Windows folder --------
      
        PS C:\> "C:\windows\*" | Resolve-Path
      
        This command returns all of the folders in the C:\Windows folder. The command uses a pipeline operator (|) to send a path string to `Resolve-Path`.
        ---------------- Example 4: Resolve a UNC path ----------------
      
        PS C:\> Resolve-Path -Path "\\Server01\public"
      
        This command resolves a Universal Naming Convention (UNC) path and returns the shares in the path.
        ---------------- Example 5: Get relative paths ----------------
      
        PS C:\> Resolve-Path -Path "c:\prog*" -Relative
      
        .\Program Files
        .\Program Files (x86)
        .\programs.txt
      
        This command returns relative paths for the directories at the root of the C: drive.
        -------- Example 6: Resolve a path containing brackets --------
      
        PS C:\> Resolve-Path -LiteralPath 'test[xml]'
      
      
    
    
    
    

linux bash 获取文件绝对路径

例如

xaga:/sdcard/Download $ realpath swap-controller-3307-1031.zip
/storage/emulated/0/Download/swap-controller-3307-1031.zip

其他用法示例

  realpath

  Display the resolved absolute path for a file or directory.
  More information: https://www.gnu.org/software/coreutils/realpath.

  - Display the absolute path for a file or directory:
    realpath path/to/file_or_directory

  - Require all path components to exist:
    realpath --canonicalize-existing path/to/file_or_directory

  - Resolve ".." components before symlinks:
    realpath --logical path/to/file_or_directory

  - Disable symlink expansion:
    realpath --no-symlinks path/to/file_or_directory

  - Suppress error messages:
    realpath --quiet path/to/file_or_directory

man realpath

REALPATH(1)                           User Commands                          REALPATH(1)

NAME
       realpath - print the resolved path

SYNOPSIS
       realpath [OPTION]... FILE...

DESCRIPTION
       Print the resolved absolute file name; all but the last component must exist

       -e, --canonicalize-existing
              all components of the path must exist

       -m, --canonicalize-missing
              no path components need exist or be a directory

       -L, --logical
              resolve '..' components before symlinks

       -P, --physical
              resolve symlinks as encountered (default)

       -q, --quiet
              suppress most error messages

       --relative-to=DIR
              print the resolved path relative to DIR

       --relative-base=DIR
              print absolute paths unless paths below DIR

       -s, --strip, --no-symlinks
              don't expand symlinks

       -z, --zero
              end each output line with NUL, not newline

       --help display this help and exit

       --version
              output version information and exit

AUTHOR
       Written by Padraig Brady.

linux别名创建基本格式

alias <aliaseName>=<value>
最重要的是,等号两边和值必须紧密相联,没有空格,

正确示例

alias test1=~/dir/testFile

值带有空格的时候

需要为值用""包裹起来
例如
alias importConfig="source /home/cxxu/linuxShellScripts/importer.sh"

错误示例

下例子中,错误在于,别名importConfig和等号之间有一个空格!

alias importConfig ="source /home/cxxu/linuxShellScripts/importer.sh"