powershell - Show the previous and after N lines each for the matched lines? -

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the following command show lines match pattern.

cat file.txt | select-string -pattern "..."

how show previous , after 3 lines each matched lines? (like -c3 parameter of grep.) possible print out line number?

btw, command slower comparing grep?

specify filename in -path parameter of select-string, , use -context switch specify number of lines before , after include.

select-string -path file.txt -pattern "..." -context 1,3

the file name , line number included in output


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