powershell - extract file name and extension

Question

I need to extract file name and extension from e g  my file xlsx  I don t know the name of file or extension and there may be more dots in the name  so I need to search the string from the right and when I find first dot  or last from the left   extract the part on the right side and the part on the left side from that dot   Maybe there is better solution  but I did n find anything here or anywhere else  Thank you

User · Answer

PS C  Users joshua gt   file   New-Object System IO FileInfo  file type   PS C  Users joshua gt   file BaseName   file Extension file  type

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As of PowerShell 6 0  Split-Path has an -Extenstion parameter  This means you can do   path   Split-Path -Extension  or Split-Path -Path  path -Extension  For  path    quot test txt quot  both versions will return  txt  inluding the full stop

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This is an adaptation  if anyone is curious  I needed to test whether RoboCopy successfully copied one file to multiple servers for its integrity       Comp   get-content c  myfile txt  ForEach   PC in  Comp        dir     PC Folder Share        Select-Object    BaseName     Nice and simple  and it shows the directory and the file inside it  If you want to specify one file name or extension  just replace the   s with whatever you want       Directory    SERVER Folder Share  Mode                LastWriteTime     Length Name                                                                                                                                              ----                -------------     ------ ----                                                                                                                                              -a---         2 27 2015   5 33 PM    1458935 Test pptx

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just do it    file Get-Item  C  temp file htm   file Basename   file Extension

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PS C  Windows System32 WindowsPowerShell v1 0 gt split-path  H  Documents devops tp-mkt-SPD-38 4 10 msi  -leaf tp-mkt-SPD-38 4 10 msi  PS C  Windows System32 WindowsPowerShell v1 0 gt   psversiontable  Name                           Value ----                           ----- CLRVersion                     2 0 50727 5477 BuildVersion                   6 1 7601 17514 PSVersion                      2 0 WSManStackVersion              2 0 PSCompatibleVersions            1 0  2 0  SerializationVersion           1 1 0 1 PSRemotingProtocolVersion      2 1

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If the file is coming off the disk and as others have stated  use the BaseName and Extension properties   PS C   gt  dir   xlsx   select BaseName Extension  BaseName                                Extension --------                                --------- StackOverflow com Test Config            xlsx     If you are given the file name as part of string  say coming from a text file   I would use the GetFileNameWithoutExtension and GetExtension static methods from the System IO Path class   PS C   gt   System IO Path   GetFileNameWithoutExtension  Test Config xlsx   Test Config PS H   gt   System IO Path   GetExtension  Test Config xlsx    xlsx

User · Answer

Check the BaseName and Extension properties of the FileInfo object

User · Answer

If is from a text file and and presuming name file are surrounded by white spaces this is a way    a   get-content c  myfile txt   b    a   select-string -pattern   s      3 4  s    select -ExpandProperty matches   select -ExpandProperty value   b       File name  0  - Extension  1   -f    substring 0     lastindexof            substring    lastindexof           length -    lastindexof            If is a file you can use something like this based on your needs    a   dir   my file xlsx   or  a   get-item c  my file xlsx    a     Directory  Microsoft PowerShell Core FileSystem  C  ps   Mode           LastWriteTime       Length Name ----           -------------       ------ ---- -a---      25 01 10    11 51          624 my file xlsx    a BaseName my file  a Extension  xlsx

User · Answer

Use Split-Path   filePath    C  PS Test Documents myTestFile txt    fileName    Split-Path -Path  filePath -Leaf  Split      0    extension    Split-Path -Path  filePath -Leaf  Split      1

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