Powershell replace function - replacing lines with numbers

Question

Basicly I am trying to find a way to put a variable for replacing a line in powershell.

The current script:

$switches = get-outlookinbox | where subject -eq "Hello"
    $e = $switches.body
    $e = $e.replace("Hello:","")
    $e = $e.replace(" Number","")
    $e = $e.replace(":1","")
    $e = $e.replace(":2","")
    $e = $e.replace(":3","")
    $e = $e.replace(":4","")
    $e = $e.replace(":99","")

You can see what I am going for here... But I don't want 99 lines of replace code, any thoughts on this? Also, the numbers MUST have : infront of it, otherwise the replace will corrupt the file since it contains only IP's and ports, it's the ports I want to remove from the output.

score 2 · Accepted Answer · 2014-07-17 16:50:49Z

2

You can use a simple foreach loop and iterate from 99 to 1:

foreach ($n in 99..1)
{
    $e = $e.Replace(":$n", " ")
}

Or, if you prefer one line:

foreach ($n in 99..1) { $e = $e.Replace(":$n", " ") }

Demo:

PS > $mystr = "a:1:2:3:4:5:6:7:8:9:10:11:12:13:14:15:16:17:18:19:20b"  
PS > foreach ($n in 20..1) { $mystr = $mystr.replace(":$n", "") }
PS > $mystr
ab 
PS >

edited Jul 17, 2014 at 16:50

answered Jul 17, 2014 at 16:35

user2555451

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2 Comments

Cole9350 Over a year ago

Conveniently your demo only goes up to 9... if it went into double digits it would be very obvious that this does not work

user2555451 Over a year ago

@Cole9350 - Ah, my mistake. I should be iterating in reverse. Thanks for pointing that out.

Cole9350 · Accepted Answer · 2014-07-17 16:37:47Z

2

Regular expressions : regex101.com

$e = $e -replace ':\d+',""

No loops necessary

answered Jul 17, 2014 at 16:37

Cole9350

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Comments

mjolinor · Accepted Answer · 2014-07-17 17:12:00Z

2

Might as well get 'em all while you're at it:

$e -replace 'Hello:| Number|:\d{1,2}'

edited Jul 17, 2014 at 17:12

answered Jul 17, 2014 at 16:54

mjolinor

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