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Strings & Text
Manipulate strings, match patterns, and format output.
Transforming strings
Replace text
Substitute one substring for another.
"Hello World" -replace "World", "PowerShell"Split a string
Break a string into an array on a delimiter.
"a,b,c" -split ","Join an array into a string
Combine array elements with a separator.
@("a", "b", "c") -join " | "Trim and change case
Clean up whitespace and normalize case.
" Hello ".Trim().ToUpper()Searching and matching
Search files for a pattern (grep)
Find lines matching a regex across files.
Select-String -Path ".\*.log" -Pattern "ERROR"Test a regex match
Return true/false if a string matches.
"user@example.com" -match "^[^@]+@[^@]+\.[^@]+$"Extract with a capture group
Pull a value out using $matches.
if ("Order #4521" -match "#(\d+)") { $matches[1] }Formatting output
Format with placeholders
Insert values into a template string.
"{0} has {1} items" -f "Cart", 3Pad and align numbers
Right-align a number in a fixed width.
"{0,8:N2}" -f 1234.5