I'm trying to find a way to grab a specific line from a string based on line number.
For instance, I want to pull whatever is in line 19.
From what I understand, I could do this with Get-Content and -Index if I was pulling from a file. Is there an alternative when working with variables instead of files?
Assuming a single, multi-line string $str as the input, and $lineNo as the 1-based line number to extract:
($str -split '\r?\n')[$lineNo - 1]
-split '\r?\n' splits the input string into an array of lines.
\r?\n is designed to match both Windows-style CRLF newlines and Unix-style LF-only newlines.Then [$lineNo - 1] accesses the line of interest; given that line numbers are 1-based but array indices are 0-based, - 1 must be applied to the line number.
Example:
$str = @'
line 1
line 2
line 3
line 4
line 5
'@
$lineNo = 3
($str -split '\r?\n')[$lineNo - 1] # -> 'line 3'
Depends how your string/variable is constructed and what delimiters your data has.
Maybe these examples inspire you...
$var1 = @(
'one'
'two'
'three'
)
$var2 = "four,five,six"
$var3 = @'
seven
eight
nine
'@
# array
$var1[1]
# string with delimeter
$var2.Split(',')[1]
# here string like raw file with CRLF as delim
$var3.Split("`r`n")[1]
