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Faki	06-07-2022 08:35 PM

sed command '1s/^/File: /;1!s/^/+ /'

What does this sed command do? I see that it adds "File: " or "+ ", but is not straightforward to determine when the expressions are inserted.

Code:

sed '1s/^/File: /;1!s/^/+ /'

michaelk

06-07-2022 09:06 PM

Lets start with https://www.gnu.org/software/sed/manual/sed.html

Basically 1 is line one and 1! is all lines but line 1.

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