Strings
Workaround to insert text (New Text) before or after a specific pattern (Some Text) by recreating the file.
This example doesn't directly insert but rebuilds the file with additional text (NEED TO TEST)
type file.txt | find /v "Some Text" > temp.txt && echo New Text >> temp.txt && type temp.txt > file.txt
Insert Before a specific pattern.
Adjust the -replace pattern to change where the text is inserted:
$content = Get-Content file.txt; $newContent = $content -replace "Pattern", "New Text$0"; $newContent | Set-Content file.txt
Insert Before a Specific Pattern:
This script inserts "Your new text here" before the first occurrence of "specific pattern" in file.txt:
$content = Get-Content -Path file.txt
$index = $content | Select-String -Pattern "specific pattern" -SimpleMatch | Select-Object -First 1 -ExpandProperty LineNumber
$before = $content[0..($index-2)] # Lines before the pattern
$after = $content[($index-1)..($content.Length-1)] # Lines including and after the pattern
$newContent = $before + "Your new text here" + $after
$newContent | Set-Content -Path file.txt
Similar to the above, this command inserts "New Text" by replacing a specific pattern ("Pattern") in the file:
(Get-Content file.txt) -replace 'Pattern', 'New Text' | Set-Content file.txt
Insert After a specific pattern:
findstr /s /i "<pattern>" <filename> > temp.txt
echo "<string/line>" >> temp.txt
move temp.txt <filename>
Lines
Add line numbers:
type C:\file.txt | find /n /v ""
Displays each line of a file with line numbers:
findstr /n "^" C:\file.txt
Add line numbers to the content of a file:
Get-Content C:\path\to\file.txt | ForEach-Object { $i++; "$i $_" } | Set-Content C:\path\to\numberedfile.txt
Inserting Text at the Beginning of a File:
$text = "Your new text here`n" + (Get-Content file.txt -Raw)
Set-Content -Path file.txt -Value $text
Inserting Text After a Specific Line: Adjust [0..($content.Count-1)] to target a different line.
$content = Get-Content -Path file.txt
$modifiedContent = $content[0..($content.Count-1)] + "Your new text here" + $content[$content.Count..($content.Count)]
Set-Content -Path file.txt -Value $modifiedContent
Add line at specific point (NEED TO TEST):
@echo off
for /f "delims=" %%a in (<filename>) do (
if %%a==<pattern> (
echo "<string/line>"
)
echo %%a
) > temp.txt
move temp.txt <filename>
