Replacing words in powershell using a variable

Question

i want to write a script that takes inputfrom the user and changes a word in a file to what the user entered. saw some people doing it like this:

(Get-Content c:\temp\test.txt).replace('word1', 'word2') | Set-Content c:\temp\test.txt

the problem is that i want to replace a word with a variable, so when i put it between the commas it wont work.

i want it to be something like that:

$word = read-host " please enter a word"
(Get-Content c:\temp\test.txt).replace('oldtext', '$word') | Set-Content c:\temp\test.txt

is there any way to do that?

UPDATE: tried it like this:

$path = "C:\Users\tc98868\Desktop\dsp.json"
$word = read-host "please enter a word"
(Get-Content $path).replace('dsp.tar.gz', $word) | Set-Content $path

and it still doesnt work.

Related: http://stackoverflow.com/questions/17144355/how-can-i-replace-every-occurence-of-a-string-in-a-file-with-powershell — David Brabant, Dec 06 '16 at 11:53

Avshalom · Accepted Answer · 2016-12-06T12:02:55.050

2

Remove the single quote from the $word

PowerShell not expanding variables inside a single quote, it threat is as a string

$word = read-host " please enter a word"
(Get-Content c:\temp\test.txt).replace('oldtext', $word) | Set-Content c:\temp\test.txt

For PS Version 2:

(Get-Content c:\temp\test.txt) -replace 'oldtext', $word | Set-Content c:\temp\test.txt

edited Dec 06 '16 at 12:02

answered Dec 06 '16 at 11:44

Avshalom

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tried it this way: $path = "C:\Users\tc98868\Desktop\dsp.json" $word = read-host "please enter a word" (Get-Content $path).replace('dsp.tar.gz', $word) | Set-Content $path and it still doesnt work.. have any idea why? – ofribouba Dec 06 '16 at 11:53

Replacing words in powershell using a variable

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