CODEWITHSUNDEEP
arraysstringpowershell
paul33
paul33

Reputation: 25

replacing numbering inside an ASCII file

I want to erase the line numbering inside an ascii code file. The numbering starts with the Letter "N" and is followed by numbers as in example below. 

N4980 G01 X = 0.75 Y = 14.97 Z = 0.07  
N5000 G01 X = 1.75 Y = 14.97 Z = 0.07  
N5020 G01 X = 1.75 Y = 22.00 Z = 0.07  
N5030 G01 X = 0.75 Y = 14.97 Z = 0.07 
N5060 G01 X = 32.75 Y = 14.97 Z = 0.07

i used powershell to replace individual strings but not a sequence of numbers. does anyone have a solution for this?

thanks!

Upvotes: 0

Views: 40

Answers (1)

Mathias R. Jessen
Mathias R. Jessen

Reputation: 174485

Read the file with Get-Content, use -replace to (conditionally) replace the line number, then pipe the whole thing to Set-Content to write it back to disk:

# read the whole file
$lines = Get-Content .\file.txt

# replace any leading `NXXXX ` sequence and write back to the file
$lines -replace '^N\d+\s+' |Set-Content .\file.txt

Upvotes: 1

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