I am not able to replace multi line texts at all or in other word combining them to one line . here is the example for the file c:\me\testes.text and the contents are as follows
<error.error1>
<error.rec2>
<error.short3>
<error.error4>
<error.rec5>
<error.short6>
My exceptions: I want to combine or replace each first 3 lines to one single line across in the multiple files that is
<error.error1> <error.rec2> <error.short3>
<error.error4> <error.rec5> <error.short6>
I am able to combine each first 2 lines but here its 3 lines .
Please help,
MJ
Use Get-Content to read the file 3 lines at a time by specifying the -ReadCount parameter, pipe these 3 lines to ForEach-Object and join them together.
Get-Content "c:\me\testes.text" -ReadCount 3 | ForEach-Object {
$_ -join ' '
}
Output will look like:
<error.error1> <error.rec2> <error.short3>
<error.error4> <error.rec5> <error.short6>
To read multiple files, 3 lines at a time you can pipe from Get-ChildItem into a loop and then grab the content from the file before joining it back together and writing it back to the respective file.
Get-ChildItem -Path c:\me\testes\* -Filter *txt | ForEach-Object {
(Get-Content -LiteralPath $_.FullName -ReadCount 3) | ForEach-Object {
$_ -join ''
} | Set-Content -LiteralPath $_.FullName
}
Related
SHORT: I am trying to duplicate lines in all files in a folder based on a certain string and then replace original strings in duplicated lines only.
Contents of the original text file (there are double quotes in the file):
"K:\FILE1.ini"
"K:\FILE1.cfg"
"K:\FILE100.cfg"
I want to duplicate the entire line 4 times only if a string ".ini" is present in a line.
After duplicating the line, I want to change the string in those duplicated lines (original line stays the same) to: for example, ".inf", ".bat", ".cmd", ".mov".
So the expected result of the script is as follows:
"K:\FILE1.ini"
"K:\FILE1.inf"
"K:\FILE1.bat"
"K:\FILE1.cmd"
"K:\FILE1.mov"
"K:\FILE1.cfg"
"K:\FILE100.cfg"
Those files are small, so using streams is not neccessary.
I am at the beginning of my PowerShell journey, but thanks to this community, I already know how to replace string in files recursively:
$directory = "K:\PS"
Get-ChildItem $directory -file -recurse -include *.txt |
ForEach-Object {
(Get-Content $_.FullName) -replace ".ini",".inf" |
Set-Content $_.FullName
}
but I have no idea how to duplicate certain lines multiple times and handle multiple string replacements in those duplicated lines.
Yet ;)
Could point me in the right direction?
To achieve this with the operator -replace you can do:
#Define strings to replace pattern with
$2replace = #('.inf','.bat','.cmd','.mov','.ini')
#Get files, use filter instead of include = faster
get-childitem -path [path] -recurse -filter '*.txt' | %{
$cFile = $_
#add new strings to array newData
$newData = #(
#Read file
get-content $_.fullname | %{
#If line matches .ini
If ($_ -match '\.ini'){
$cstring = $_
#Add new strings
$2replace | %{
#Output new strings
$cstring -replace '\.ini',$_
}
}
#output current string
Else{
$_
}
}
)
#Write to disk
$newData | set-content $cFile.fullname
}
This gives you the following output:
$newdata
"K:\FILE1.inf"
"K:\FILE1.bat"
"K:\FILE1.cmd"
"K:\FILE1.mov"
"K:\FILE1.ini"
"K:\FILE1.cfg"
"K:\FILE100.cfg"
I have a working script that searches for files with a regular expression. The script returns 2 lines per file: the parent folder naùe, and the filename (matching the regex).
Get-ChildItem -Path "D:\test\" -Recurse -File |
Where-Object { $_.BaseName -match '^[0-9]+$' } |
ForEach-Object { $_.FullName -Split '\',-3,'SimpleMatch' } |
select -last 2 |
Out-File "D:\wim.txt"
A certain system needs to have the output on one line, concatenated with for example \ or a similar character. How can I achieve this please ?
Many thanks !
Get-ChildItem -Path D:\test -Recurse -File |
Where-Object { $_.BaseName -match '^[0-9]+$' } |
ForEach-Object { ($_.FullName -split '\\')[-2,-1] -join '\' } | #'
Out-File D:\wim.txt
($_.FullName -Split '\\')[-2,-1] extracts the last 2 components from the file path
and -join '\' joins them back together.
Note that, aside from the line-formatting issue, your original command does not work as intended, because | select -last 2 is applied to the overall output, not per matching file; thus, even if there are multiple matching files, you'll only ever get the parent directory and filename of the last matching file.
The command above therefore extracts the last 2 \-separated path components inside the ForEach-Object block, directly on the result of the -split operation, so that 2 (joined) components are returned per file.
As an aside, the -3 in $_.FullName -split '\', -3, 'SimpleMatch' does not extract the last 3 tokens; it is currently effectively treated the same as 0, meaning that all resulting tokens are returned; given that -split defaults to using regexes, and representing a literal \ requires escaping as \\, $_.FullName -split '\', -3, 'SimpleMatch' is the same as $_.FullName -split '\\', which is what the solution above uses.
Note that there is a green-lit -split enhancement that will give negative <Max-substrings> values new meaning in the future, applying the current positive-number logic analogously to the end of the input string; e.g, -3 would mean: return the last 2 components plus whatever is left of the input string before them (with the resulting tokens still reported from left to right).
How to read particular range of line ie if my file have 100 lines and I want to read the lines from 80 to last line of file using PowerShell?here I'm not sure about how many lines are available in the file.
Just do it :
Get-Content "C:\temp\test.txt" | select -skip 80
Or just get the last 20 lines:
Get-Content -Path 'C:\temp\test.txt' -Tail 20
If you want to find out how many lines the file has so that you can use that to decide what to read, this could help:
$lines = Get-Content -Path 'C:\temp\test.txt'
$lines.count
So if you decide you want to get for example the last half of the lines you could do something like this:
$lines = Get-Content -Path 'C:\temp\test.txt'
$half = [math]::Round($lines.count/2)
Select-Object -InputObject $lines -Last $half
I've been trying to adapt the answer to this question: powershell - concatenate N text files and prepend filename to each line
My desired output based on an example of 2 .txt files:
First.txt
lines of
data
Second.txt
more lines
of
data
Output.txt
First1 lines of
First2 data
Second1 more lines
Second2 of
Second3 data
Based on the most similar question I could find the following answer:
Select-String '^' *.txt >output.txt
Would give:
C:\A\Filepath\First.txt:1:lines of
C:\A\Filepath\First.txt:2:data
C:\A\Filepath\Second.txt:1:more lines
C:\A\Filepath\Second.txt:2:of
C:\A\Filepath\Second.txt:3:data
So I was hoping to use -replace to remove the filepath, keep the file name (but remove .txt:), keep the line number (but replace the final : with a space) and keep the text from the line.
Any help would be appreciated reaching the desired output.txt. Thanks
Not beautiful but this is one approach.
Get-ChildItem *.txt |
%{$FILENAME=$_.BaseName;$COUNT=1;get-content $_ |
%{"$FILENAME"+"$COUNT"+" " + "$_";$COUNT++}}|
Out-File Output.txt
The select-string approach is very interesting. The way I would go about it is to use Get-Content. The advantage there is that each line has a readcount property that represents the line number.
Get-ChildItem "C:\temp\*.file" | ForEach-Object{
$fileName = $_.BaseName
Get-content $_ | ForEach-Object{
"{0}{1} {2}" -f $fileName,$_.ReadCount,$_
}
} | Add-Content "C:\temp\output.txt"
Take each file and use Get-Content. With each line we process we send to the output stream a formatted line matching your desired output. No need to count the lines as $_.ReadCount already knows.
Select-String still works
You just need to manipulate the output to match what you want. Using Get-Member we can check the properties of what select-string returns to get our desired output.
Select-String '^' "c:\temp\*.txt" | ForEach-Object{
"{0}{1} {2}" -f $_.Filename,$_.LineNumber,$_.Line
} | Add-Content "C:\temp\output.txt"
I'm trying to find out how to use powershell to find and delete lines without certain string pattern in a set of files. For example, I have the following text file:
111111
22x222
333333
44x444
This needs to be turned into:
22x222
44x444
given that the string pattern of 'x' is not in any of the other lines.
How can I issue such a command in powershell to process a bunch of text files?
thanks.
dir | foreach { $out = cat $_ | select-string x; $out | set-content $_ }
The dir command lists the files in the current directory; the foreach goes through each file; cat reads the file and pipes into select-string; select-string finds the lines that contains the specific pattern, which in this case is "x"; the result of select-string is stored in $out; and finally, $out is written to the same file with set-content.
We need the temporary variable $out because you cannot read and write the same file at the same time.
This will process all txt files from the working directory. Each file content is checked and only lines that have 'x' in them are allowed to pass on. The result is written back to the file.
Get-ChildItem *.txt | ForEach-Object{
$content = Get-Content $_.FullName | Where-Object {$_ -match 'x'}
$content | Out-File $_.FullName
}