Read a directory listing into Powershell, then display every other filename to the screen
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0
down vote
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Here is the Powershell script that I have created so far:
dir C:WindowsSystem32 | Sort-Object -Descending
My end goal is to list all the files (files only - no sub directories) in the following directory, sorted by filename in descending order. Next I need to read this directory listing created into Powershell, then display every other filename to the screen.
I was trying to find a way to do this by piping the sorted results into the Foreach-Object cmdlet, and then reading "Object" from the resulting list, using the Get-Content cmdlet, and the FullName proprety of each object - like: Get-Content $_.FullName
dir C:WindowsSystem32 | Sort-Object -Descending | ForEach-Object
Any ideas how to make this happen with those cmdlets?
powershell
asked Nov 9 at 21:39
bear443
83
add a comment |
up vote
0
down vote
favorite
Here is the Powershell script that I have created so far:
dir C:WindowsSystem32 | Sort-Object -Descending
My end goal is to list all the files (files only - no sub directories) in the following directory, sorted by filename in descending order. Next I need to read this directory listing created into Powershell, then display every other filename to the screen.
I was trying to find a way to do this by piping the sorted results into the Foreach-Object cmdlet, and then reading "Object" from the resulting list, using the Get-Content cmdlet, and the FullName proprety of each object - like: Get-Content $_.FullName
dir C:WindowsSystem32 | Sort-Object -Descending | ForEach-Object
Any ideas how to make this happen with those cmdlets?
powershell
asked Nov 9 at 21:39
bear443
83
1
ForEach-Objecthas an optional begin scriptblock you can use to initialize a counter, so append|ForEach-Object $i=0$i++;if($i%2)$_to output all even entries.
– LotPings
Nov 9 at 23:08
Exactly what I was looking for. Thank you.
– bear443
Nov 11 at 23:57
You don't even need a separatee increment command, the position of the++dertermines if it is pre or post the modulus.|ForEach-Object $i=0if(++$i%2)$_or|ForEach-Object $i=0if($i++%2)$_
– LotPings
Nov 12 at 9:42
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Here is the Powershell script that I have created so far:
dir C:WindowsSystem32 | Sort-Object -Descending
My end goal is to list all the files (files only - no sub directories) in the following directory, sorted by filename in descending order. Next I need to read this directory listing created into Powershell, then display every other filename to the screen.
I was trying to find a way to do this by piping the sorted results into the Foreach-Object cmdlet, and then reading "Object" from the resulting list, using the Get-Content cmdlet, and the FullName proprety of each object - like: Get-Content $_.FullName
dir C:WindowsSystem32 | Sort-Object -Descending | ForEach-Object
Any ideas how to make this happen with those cmdlets?
powershell
asked Nov 9 at 21:39
bear443
83
Here is the Powershell script that I have created so far:
dir C:WindowsSystem32 | Sort-Object -Descending
My end goal is to list all the files (files only - no sub directories) in the following directory, sorted by filename in descending order. Next I need to read this directory listing created into Powershell, then display every other filename to the screen.
I was trying to find a way to do this by piping the sorted results into the Foreach-Object cmdlet, and then reading "Object" from the resulting list, using the Get-Content cmdlet, and the FullName proprety of each object - like: Get-Content $_.FullName
dir C:WindowsSystem32 | Sort-Object -Descending | ForEach-Object
Any ideas how to make this happen with those cmdlets?
powershell
powershell
asked Nov 9 at 21:39
bear443
83
asked Nov 9 at 21:39
bear443
83
asked Nov 9 at 21:39
bear443
83
asked Nov 9 at 21:39
bear443
83
asked Nov 9 at 21:39
bear443
83
83
1
ForEach-Objecthas an optional begin scriptblock you can use to initialize a counter, so append|ForEach-Object $i=0$i++;if($i%2)$_to output all even entries.
– LotPings
Nov 9 at 23:08
Exactly what I was looking for. Thank you.
– bear443
Nov 11 at 23:57
You don't even need a separatee increment command, the position of the++dertermines if it is pre or post the modulus.|ForEach-Object $i=0if(++$i%2)$_or|ForEach-Object $i=0if($i++%2)$_
– LotPings
Nov 12 at 9:42
add a comment |
1
ForEach-Objecthas an optional begin scriptblock you can use to initialize a counter, so append|ForEach-Object $i=0$i++;if($i%2)$_to output all even entries.
– LotPings
Nov 9 at 23:08
Exactly what I was looking for. Thank you.
– bear443
Nov 11 at 23:57
You don't even need a separatee increment command, the position of the++dertermines if it is pre or post the modulus.|ForEach-Object $i=0if(++$i%2)$_or|ForEach-Object $i=0if($i++%2)$_
– LotPings
Nov 12 at 9:42
1
1
ForEach-Object has an optional begin scriptblock you can use to initialize a counter, so append |ForEach-Object $i=0$i++;if($i%2)$_ to output all even entries.– LotPings
Nov 9 at 23:08
ForEach-Object has an optional begin scriptblock you can use to initialize a counter, so append |ForEach-Object $i=0$i++;if($i%2)$_ to output all even entries.– LotPings
Nov 9 at 23:08
Exactly what I was looking for. Thank you.
– bear443
Nov 11 at 23:57
Exactly what I was looking for. Thank you.
– bear443
Nov 11 at 23:57
You don't even need a separatee increment command, the position of the
++ dertermines if it is pre or post the modulus. |ForEach-Object $i=0if(++$i%2)$_ or |ForEach-Object $i=0if($i++%2)$_– LotPings
Nov 12 at 9:42
You don't even need a separatee increment command, the position of the
++ dertermines if it is pre or post the modulus. |ForEach-Object $i=0if(++$i%2)$_ or |ForEach-Object $i=0if($i++%2)$_– LotPings
Nov 12 at 9:42
add a comment |
1 Answer
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oldest
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0
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accepted
you can get the index number of an item in an array with .IndexOf(). you can get the even numbers of a list of numbers by using "mod 2 = zero". something like this ...
$TargetDir = "$env:windirsystem32"
$FileList = Get-ChildItem -LiteralPath $TargetDir -File |
Sort-Object -Property Name
foreach ($FL_Item in $FileList)
# if "number mod 2 = zero", then it's an even number
if ($FileList.IndexOf($FL_Item) % 2 -eq 0)
$FL_Item.Name
answered Nov 9 at 22:15
Lee_Dailey
98266
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
you can get the index number of an item in an array with .IndexOf(). you can get the even numbers of a list of numbers by using "mod 2 = zero". something like this ...
$TargetDir = "$env:windirsystem32"
$FileList = Get-ChildItem -LiteralPath $TargetDir -File |
Sort-Object -Property Name
foreach ($FL_Item in $FileList)
# if "number mod 2 = zero", then it's an even number
if ($FileList.IndexOf($FL_Item) % 2 -eq 0)
$FL_Item.Name
answered Nov 9 at 22:15
Lee_Dailey
98266
add a comment |
up vote
0
down vote
accepted
you can get the index number of an item in an array with .IndexOf(). you can get the even numbers of a list of numbers by using "mod 2 = zero". something like this ...
$TargetDir = "$env:windirsystem32"
$FileList = Get-ChildItem -LiteralPath $TargetDir -File |
Sort-Object -Property Name
foreach ($FL_Item in $FileList)
# if "number mod 2 = zero", then it's an even number
if ($FileList.IndexOf($FL_Item) % 2 -eq 0)
$FL_Item.Name
answered Nov 9 at 22:15
Lee_Dailey
98266
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
you can get the index number of an item in an array with .IndexOf(). you can get the even numbers of a list of numbers by using "mod 2 = zero". something like this ...
$TargetDir = "$env:windirsystem32"
$FileList = Get-ChildItem -LiteralPath $TargetDir -File |
Sort-Object -Property Name
foreach ($FL_Item in $FileList)
# if "number mod 2 = zero", then it's an even number
if ($FileList.IndexOf($FL_Item) % 2 -eq 0)
$FL_Item.Name
answered Nov 9 at 22:15
Lee_Dailey
98266
you can get the index number of an item in an array with .IndexOf(). you can get the even numbers of a list of numbers by using "mod 2 = zero". something like this ...
$TargetDir = "$env:windirsystem32"
$FileList = Get-ChildItem -LiteralPath $TargetDir -File |
Sort-Object -Property Name
foreach ($FL_Item in $FileList)
# if "number mod 2 = zero", then it's an even number
if ($FileList.IndexOf($FL_Item) % 2 -eq 0)
$FL_Item.Name
answered Nov 9 at 22:15
Lee_Dailey
98266
answered Nov 9 at 22:15
Lee_Dailey
98266
answered Nov 9 at 22:15
Lee_Dailey
98266
answered Nov 9 at 22:15
Lee_Dailey
98266
98266
add a comment |
add a comment |
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1
ForEach-Objecthas an optional begin scriptblock you can use to initialize a counter, so append|ForEach-Object $i=0$i++;if($i%2)$_to output all even entries.– LotPings
Nov 9 at 23:08
Exactly what I was looking for. Thank you.
– bear443
Nov 11 at 23:57
You don't even need a separatee increment command, the position of the
++dertermines if it is pre or post the modulus.|ForEach-Object $i=0if(++$i%2)$_or|ForEach-Object $i=0if($i++%2)$_– LotPings
Nov 12 at 9:42