findstr

Find specified text within one or more files. More information: https://learn.microsoft.com/windows-server/administration/windows-commands/findstr.

• Find one or more strings in all files:

findstr "string1 string2 …" *

• Find one or more strings in a piped command's output:

dir | findstr "string1 string2 …"

• Find one or more strings in all files recur[s]ively:

findstr /s "string1 string2 …" *

• Find strings using a case-insensitive search:

findstr /i "string1 string2 …" *

• Find strings in all files using regular expressions:

findstr /r "expression" *

• Find a literal string (containing spaces) in all text files:

findstr /c:"string1 string2 …" *.txt

• Display the line number before each matching line:

findstr /n "string1 string2 …" *

• Display only the filenames that contain a match:

findstr /m "string1 string2 …" *